The kid nicknamed Boner in my school got the name because in middle school swim class he would go around to everyone in the pool and creepily say "I have a boner!" We would naturally flee.
Who's the bigger douche, Mike Seaver for browbeating his simpleminded friend into a lifetime of ridicule by forcing him to go by such an insulting moniker, or Kirk Cameron for probably getting all the writers responsible for this scene thrown out on the streets for daring to use language like 'dicky' and 'boner'?