(BOTH GIGGLE)
The Big Bang Theory Season 4, Episode 9
(BOTH GIGGLE)
The Big Bang Theory Season 4, Episode 2
(IMITATES SHELDON'S GIGGLE)
The Big Bang Theory Season 4, Episode 1
(BOTH GIGGLE)
The Big Bang Theory Season 4, Episode 2
...he would GIGGLE and say,
"Oh, boy, my breast friends."
The Big Bang Theory Season 4, Episode 19