When players in the varsity locker room take turns plowing and humping new coming teammates. This can be freshmen on varsity, or even Juniors and Seniors. This is a very popular phenomenon amongst straight men, it is a common for some to entertain this behavior. Most of the guys are not gay, they just enjoy testing out there sexuality. All guys either watch in silence, or partake themselves. Cheekin is basically a mock train, done by multiple men on the same team.
After failing to catch the Pass, Dez knew at that moment cheekin would be the response in the locker room.
Using a game mechanic (whether intentional or not) to completely bypass a level or boss.
In the original Castlevania for the NES, the holy water was (in)famously effective at cheesing every single boss in the game except for Dracula himself. It was so overpowered that even the most casual gamer could play through the game with ease, only to ragequit at the final boss because suddenly, holy water doesn't work anymore.