But the GIBBON doesn't know
what it's categorized as.
The Big Bang Theory Season 8, Episode 8
It'd be more hygienic
if they had a plague-infested GIBBON...
The Big Bang Theory Season 2, Episode 4
The GIBBON is the only member
of the ape family not classified as a great ape.
The Big Bang Theory Season 8, Episode 8
Sorry, kid. You got it worse than a GIBBON.
The Big Bang Theory Season 8, Episode 8
...and his sister just successfully grew
a human pancreas in an adolescent GIBBON.
The Big Bang Theory Season 2, Episode 15