Why not? I do that too... My boyfriend has tried his own semen before, although he joked that it probably didn't taste as good out of the cup as it does "from the source". He likes to kiss me after i'm done with oral, which I guess is a mini-snowball. ^_^
did you mean that you could possibly choke? Or will it somehow hurt the guy? Now i'm curious. O.O
on a third note, the food definatly influence taste. My bf is a vegetarian, so his semen is very mild.
On a fourth note... The freedom of speech only extends far enough so that you do not infringe upon the rights of others.