I went to the restroom on my wedding day, and when I was returning to my seat, a waiter suddenly grabbed my arm and said, “Don’t drink from your glass, your mother-in-law put something in it” 

I decided to switch our glasses, and half an hour later something terrible happened. 

The noise of the banquet formed a pleasant background. Music, laughter, the clinking of dishes, the guests’ toasts — everything blended into one joyful hum. I stood next to my husband in the center of the hall and felt incredibly happy.

I glanced toward the main table. Next to my mother sat my mother-in-law. She looked perfect: an expensive light-colored suit, a neat hairstyle, a calm smile. She talked with the guests and from time to time raised her glass of champagne.

She noticed that I was looking at her and slightly raised her glass in my direction. I smiled back, although inside I felt a familiar tension.

At that moment I realized that I needed to step out for a moment.

“I’ll be right back,” I said to my husband.

“Just be quick, we’ll be cutting the cake soon,” he replied.

I walked through the hall, smiling at the guests, quickly went into the restroom, fixed my makeup, and a couple of minutes later I was already returning to the table.

When I approached our table, a young waiter stopped me. On his jacket there was a badge that said “trainee.”

He pretended to adjust the table setting and then said almost inaudibly:

“Please… don’t tell anyone… but don’t drink from your glass.”

At first I didn’t even understand what he had said.

“From my glass?”

He nodded quickly.

“From the one that’s at your seat. Please.”

After that he immediately walked away, as if he was afraid someone would notice him.

I remained standing by the table. In front of me was my glass of champagne. Everything looked completely normal: the golden drink, the bubbles. But the waiter’s words would not leave my mind.

“Don’t drink from your glass.”

I sat down in the chair and for several minutes just stared at it. Inside me, a feeling of anxiety was already growing.

A few minutes later I quietly left the hall and found that waiter in the service corridor. At first he tried to refuse to speak, but when I threatened to call the manager, he showed me a message on his phone.

The message was from my mother-in-law.

She had given him money and told him to add something to my glass. She said it was a “sedative” so that I would be less nervous at the wedding. The waiter agreed because he was afraid of losing his job.

When he finished his story, everything inside me turned cold. I silently returned to the hall. No one had noticed anything. The music was playing, the guests were laughing, the waiters were bringing dishes.

I walked up to the table, smiled, and discreetly switched the two glasses — mine and my mother-in-law’s.

After that I took “my” glass, stood up, and said:

“I want to make a toast.”

The guests fell silent. My mother-in-law looked at me carefully. A strange smile appeared on her face. I raised the glass and took a small sip.

My mother-in-law also raised her glass and calmly drank from it. She continued to look at me and smile.

And half an hour later something happened that I definitely did not expect. How could she do this to me  I told the continuation of my story in the first comment 

About half an hour after the toast, I noticed that something was happening to my mother-in-law.

At first she began to smile strangely. She sat at the table and quietly giggled to herself, although no one around her was saying anything funny. The guests exchanged glances, thinking she had simply had too much champagne.

Then she suddenly stood up.

“The music… what beautiful music…” she murmured.

At that moment the orchestra was not playing at all.

My mother-in-law began slowly spinning right in the middle of the hall. At first it almost looked like a joke, but after a few seconds it became clear that something strange was happening.

She laughed louder and louder. She waved her arms as if trying to catch something in the air.

“Butterflies… do you see them?” she said excitedly, trying to grab something in front of her face.

The guests began whispering. Someone thought she was feeling unwell. But it didn’t stop there.

She walked up to one of the guests and suddenly hugged him.

“My son, you’re so funny today!” she said, although a completely different person was standing in front of her.

Then she began dancing by herself, spinning, laughing loudly, and clinging to people as if they were her old friends.

Everyone was looking only at her.

And at that moment it felt like a sudden shock hit me. I understood everything.

She hadn’t put a sedative in my glass, but hallucinogens. She wanted it to be me standing in the middle of the hall now, talking to empty space and humiliating myself in front of a hundred guests.