Mr. Rostenkowski,
are you BUSY?
The Big Bang Theory Season 5, Episode 23
Wh-Why did you just say
you're too BUSY, but...
The Big Bang Theory Season 12, Episode 10
Hey, you BUSY?
The Big Bang Theory Season 7, Episode 17
Sheldon, are you BUSY?
The Big Bang Theory Season 3, Episode 4
...is BUSY trying to read the word "Juicy"
scrawled across your buttocks.
The Big Bang Theory Season 3, Episode 16