Bang! Splat! Thud.
The Big Bang Theory Season 7, Episode 15
(THUD)
The Big Bang Theory Season 5, Episode 17
(THUD)
The Big Bang Theory Season 4, Episode 4
(heavy THUD)
The Big Bang Theory Season 5, Episode 16
(yells)
(THUD)
The Big Bang Theory Season 5, Episode 15