General Discussion
In reply to the discussion: So, Romney Viciously Bullied His Sons, Too [View all]but with just a little butter on your face, nobody is really hurt very badly, although I would not consider it funny. One summer vacation my 18 year old cousin's fiancee was dunking everybody in the lake, including my siblings. I was 16 and skinny as a clothesline, but he never tried to dunk me. I think he was warned that I would NOT be a "good sport" about such a prank. Which was probably a fair assessment, but I would not play that kind of "prank" either.
But I have played others. One year, my little brother was maybe 6 and was charging down a picnic table bench like a rhino. So the three of us, my older sister, myself and my brother hatched this plan to prank my little sister. We would get her to sit on the picnic bench and brother would charge down it and surprise her. Well, it worked perfectly, except that when my brother slammed his head into her she started bawling. It was meant to be funny, it was meant to surprise her. Boy did I feel like a jerk though. As I apologized to her again last year, none of us, myself included, ever thought "this is gonna hurt". Little sister was just supposed to be startled, not hurt.
Another time I had a glass with, I thought, three or four drops of milk in it, so I flicked it at my brother (I am not sure how that was supposed to be funny anyway) but instead of a few drops hitting him a small stream hit him right in the eye. We still laugh about that today, but thing we laugh about is not how funny it was, but how stupid I was to pull such an unfunny prank. So he razzes me about it.