What's an embarrassing memory which keeps you up at night

Ill go first!
Many of years ago, i forgot the word for forehead while talking to a friend about something to do with foreheads. I thought I remembered, I was wrong. I had said this word multiple times, out loud, where other people could overhear. I know for sure someone else overheard bc I got funny looks. I fucking thought the word foreskin was forehead for a good 3 minutes before my friend corrected me.