Dopamine

[Gregory]

1. The kick ass chemical in your brain that makes you feel and do happy things... whatever they may be.
2. Also an awesome song thats the opening theme to Gantz.

[Magaret]

a chemical that is responsible for [love at first sight]
as explained in charlieissocoolikes video [Chemical Love]
it makes you [infatuated] with somebody.
it is also the chemical that makes you sort of high and happy.

[Luis Fok]

[Dat feel] [good] [chemical].

[Sonia]

Its a catecholamine neurotransmitter, which means it sends a message in your brain to tell you that you think that girl youre looking at is [fitter] to make [offspring] with than any other [dame].

[Marquetta]

The [root] of all addictions.

[Jessica]

[Dopamine] is behind a lot of the desire we associate with eating and sexual intercourse. Similarly, all addictive drugs trigger [dopamine] (the craving neurochemical) to stimulate the pleasure/reward center. So do gambling, shopping, [overeating] and other, seemingly unrelated, activities. Go shopping: dopamine. Smoke a cigarette: dopamine. Computer games: dopamine. Heroin: dopamine. Orgasm: dopamine. They all work somewhat differently [on the brain], but all raise your dopamine.

[Tanya Shivari]

the uber [chemical] in your brain that makes you feel rad.
also where heroin got its nickname, due to it [flooding] your brain with [feelgood].

[Little_Girl]

A compound present in the body as a neurotransmitter and a precursor of other substances including adrenaline.

[Tina]

a hormone (= chemical substance) that is made naturally in the body and may also be given as a drug