
'Cause it's like taking
your driver's test in a BUS.
The Big Bang Theory Season 9, Episode 10

They're on a
celebrity BUS tour.
The Big Bang Theory Season 12, Episode 18

Yeah, I was such a fan that in 1995
I traveled 10 hours by BUS...
The Big Bang Theory Season 3, Episode 5

behind a BUS
and you won't go around it?
The Big Bang Theory Season 7, Episode 3

but the BUS kept stopping
for other people to get on it.
The Big Bang Theory Season 5, Episode 15