Kenny vs. Spenny: Season 4

Kenny goes to great lengths to arouse Spenny.

After numerous false starts, Kenny comes up with an unbeatable system (F.A.R.T.) that drives the normally honest Spenny to cheat and eat some of Kenny's chili.

The guys challenge each other to see who can create the more successful viral video.

Kenny tries to gross Spenny out by eating all kinds of foul meat, but his plan backfires when he ends up sickening himself.

Once again, while Spenny tries to play it straight, Kenny will use any means necessary to winÂ...even if he has to rewrite the rules in the middle of the competition.

Kenny's genius is in full effect in this contest as he takes advantage of Spenny's absence from the house to wreak total and utter havoc on all of Spenny's possessions.

The guys' roles are reversed as Spenny takes an unaccustomed early lead in the competition, but is this all part of Kenny's diabolical plan?

In one of their more annoying contests to date, Kenny and Spenny decide to have a singing contest.

The guys don fat suits that weigh 80 lbs. and it quickly becomes apparent that Spenny is overmatched.

Spenny's adherence to taking the moral high ground provides a serious setback to his chances of winning this challenge.