He's one of the animals in my
department's nicotine ADDICTION study.
The Big Bang Theory Season 4, Episode 21
neurobiology of ADDICTION
in lower animals.
The Big Bang Theory Season 5, Episode 6
...with a slightly out-of-scale head
and a mild Dr. Pepper ADDICTION.
The Big Bang Theory Season 3, Episode 17
...gambling ADDICTION
and sexually-transmitted diseases.
The Big Bang Theory Season 2, Episode 21
I've been doing research on ADDICTION...
The Big Bang Theory Season 1, Episode 10