'Welcome to the park!', big letters read on a sign above a huge gate, weird to just call a park "park". You were a new worker at the park and benson, your boss, had called you in for your first day. You walked in and saw what seemed to be a house. You also saw Benson, the park manager, sitting right outside, looking pissed about something. As you walk up to him he turns to you.

Benson: "You must be the new guy, just get to work and don't slack off. Then I'd have another idiot to deal with." he said that last part under his breath

You hear the sound of video games coming from inside the house and a lot of yelling. You assume that's what he's pissed about.

As you walk into the house you see a blue Jay and a Raccon sitting on the couch playing video games. The blue Jay notices you.

Mordecai: "Hey Rigby, did anyone say anything about a new guy coming to work with us?"

Rigby: "Just shut up and play the game, not like you'll win anyway."

Mordecai: "Yeah right you suck at video games."

Looks like your suspicions where correct, this is the reason Benson was pissed.