So, I'll give you two of them! First victim
was me!
Second one was at a student halloween party, where a whole bunch of slightly drunken people were in a cuddle pile on the floor. Among them was Emma, a girl with short red hair in a witch costume. She was at the bottom of the pile, and was maybe 5ft max. Small, skinny, clearly stuck but too busy cuddling to notice.
Then, suddenly, she squealed - it seems someone accidentally grazed a sensitive spot. She yelped at them to stop, and then started laughing frantically.
I couldn't see where, but it was clear from her increasingly hysterical laughter and pleas for mercy that she was undergoing a serious tickle attack. She tried to get away, but she was - as mentioned - very small and had several people on top of her, so she wasn't going anywhere. I wasn't sure if someone had grabbed her arms or if she was just sat on, but either way it soon became clear that she couldn't do anything but lie there and take it.
She was screaming with laughter for about a minute, face almost turning red as her drunken friends kept tickling. In a sleeveless witch costume, she was very vulnerable, and even without the details it was being exploited heavily. And even after the minute was over, she was still under a pile of people, and she'd still intermittently burst into frantic laughter and impotent wiggling every so often.
I think the cuddle pile dispersed after about 20 minutes. While Emma wasn't being tickled that whole time, or even most of that time, she
did spend the whole time suffering random tickle attacks she could do absolutely nothing about. She was getting increasingly frantic and desperate as this went on, clearly disintergrating under the constant threat. Although she did manage to get some sizable revenge on the girl I think was the main tickler when she escaped, so at least there's that.
Drunken students are amazing for tickle stories.