Well, I've got a couple from about 10 years back, when I was in Budapest, Hungary.
One day, being my normal persnickety, jaded, cynical, pragmatistic person, I had succeeded in finally breaking the resolve of two of my friends, so much in fact that Dave launched himself at me and pinned me to the bed, while Julie proceeded to tickle me most vehemently. Now, it should be noted about now that I am extremely tickelish. So I started cackling and giggling, thrashing and squirming to get from under Dave and away from Julie, who had long, strong fingernails. Not watching what I was doing, I reached out and tried to tickle her back...instead I succeeded in squeezing something soft and roundish, close by her arm. Time stopped for a moment. Then I was suddenly on the other side of the bed, having leapt from a prone position, Julie was staring open-mouthed, and Dave was having an apoplectic fit of laughter. I've never been that shade of red before in so many areas of skin...felt like my entire body was on fire.
The other one didn't embarrass me, but did someone else. Students in Budapest are pretty relaxed and laid back, and have no qualms about unisex showers. Now, this was a hostel, so there were many showers in the washroom, but no privacy curtains. Well, on this particular day, I was having a nice, hot, long shower, and stepped out with a towel around my head drying my hair. I heard a gasp, and the sound of a plastic bottle hitting tile. I looked up into the startled face of a woman who had come to take her shower, who's face was rapidly turning crimson. There didn't seem to be much I could do, so I gathered my things and went past her back to my room, never realizing my towel was still around my head.
Alicat, the Persnikitty kilted kitty