Even though Janitor Bud leaves at 2:55pm and Joey is clocking him out at 5:00pm, Bud's time card says 2:55 on it.
When they catch Janitor Bud on tape, there is a time clock on the wall. Through the rest of the episode there isn't.
Mr. Williams: Hunter! Matthews! Wake up. We gotta watch your report, you gotta watch it.
Shawn: But it stinks.
Cory: Maybe Mr. Williams doesn't know it stinks.
Mr. Williams: Oh, he knows.
Joey: So the next time you go sticking your nose some place where it don't belong, you remember this: You suck.
Topanga: This is Topanga Lawrence saying good day and uh...don't eat veal.
Shawn: Topanga, are you sweating?
Topanga: I don't sweat, I glisten.
Shawn: Yeah, well, you're glistening like a pig.
Mr. Williams: The assignment was to find me a news story. Now, how is Jell-o news?
Shawn: When it's used for evil.