In one scene, Peter is blowing off his job off by fishing during a montage. In the very next scene of the montage, he brings the fish to work, lays it out on one of his memos and proceeds to partially gut it, tossing the guts on a blank pile of his hated TPS reports.
The scene with Lumbergh confronting Peter about the TPS reports while Peter is playing Tetris on his computer.
Peter: Not right now, Lumbergh, I'm kinda busy. In fact, I'm gonna have to ask you to just go ahead and come back some other time. I've got a meating with the Bobs in a couple of minutes.
Lumbergh: Meeting? I wasn't aware of any meeting.
Peter: Yeah, they called me at home.
Lumbergh: That sounds great, Peter. and uh, we'll go ahead and get this all fixed up for ya.