He's one of the animals in my
department's nicotine ADDICTION study.
The Big Bang Theory Season 4, Episode 21
I've been doing research on ADDICTION...
The Big Bang Theory Season 1, Episode 10
Don't forget genetic predisposition
towards ADDICTION.
The Big Bang Theory Season 1, Episode 10
Not really.
Gambling ADDICTION is a sickness.
Breaking Bad Season 4, Episode 6
Oh, yes, online gaming ADDICTION.
The Big Bang Theory Season 2, Episode 3