
Go up to the roof, HOP over
to the next building... There's a gap.
The Big Bang Theory Season 1, Episode 14

Hop, you little plumber, HOP, HOP, HOP.
The Big Bang Theory Season 2, Episode 2

Well, whatever. Why don't you go HOP off
on a quest? I'm talking to Penny here.
The Big Bang Theory Season 1, Episode 6

Hop, you little plumber, HOP, HOP, HOP.
The Big Bang Theory Season 2, Episode 2

Hop, you little plumber, HOP, HOP, HOP.
The Big Bang Theory Season 2, Episode 2