Shark
It began the last week of September. TWiT called it "Shark Week," but rather than presenting factual videos about sharks, King Leo and JammerB took turns operating a flying inflatable shark that could be moved by remote control, intruding upon show hosts for fun and creepiness.
Then, on NSFW #96, JammerB handed off the Tricaster to OMG Chad, instead opting to pilot the flying shark (which was dubbed Crazy-ass shark and later Rape Shark), mostly during the pre-show. The shark greatly traumatized Brett when it approached him from behind, but Brian appeared to greatly enjoy its company. Justin sampled himself saying "That's a crazy-ass shark" and quickly added it to his soundboard.
The shark should not be confused with Fapper, who is an adorable dolphin.
Video
Shark Week on TWiT