In the Mini-Comps episode, there was a segment where Kenny and Spenny were going to produce semen to prove who was the most virile. In this segment Kenny put a picture of Spenny's grandmother in the room, and Spenny was unable to produce any semen. Jump to the episode titled, "Who Can Produce More Semen?" and the whole episode acts as a humiliation pointing back to the mini-comps segment, where Kenny was clearly taunting Spenny at not being able to produce a drop of cum. The fact remains, it will go down in recorded history, Spenny was unable to produce any semen in either the mini-comps segment or the whole semen episode.