@awnlee jawking
And aroslav's The Strongman also rings a bell, although I can't remember whether the protagonist actually does his cheerleader chucking in public.
He does, but it's sort of background to the start of the story, not really a story about a guy cheerleader. This story search was inspired by the following claim/account someone spouted on a different forum:
He was a cheerleader in highschool, back then the cheerleaders and foodball team rode the bus together and to save time the cheerleaders would change clothes on the way just chasing the football players to the front of the buss and hanging a blanket up to block the view. Since he was one of the cheerleaders, he got to stay in the back of the bus while the girls were changing clothes. In the mind of some player this somehow made him "gay".