Need a funny/clever analogy for "red light district" activities

[HighStakesPro]

For a class assignment, I need a clever analogy for something like prostitution, gambling, drugs, or anything else in a red light district.

Example:
Prositution is like peanut butter; they both spread for bread.
Prostitution is like fishing: you never know what you're going to catch.

What are some good analogies for such activities? Give me your best (and worst).

[timex]

Is this a good class?

[HighStakesPro]

Yes.

[Brian O'Nolan]

The red light district is like HighStakesPro: it's not actually a district, and the lights aren't really red.

[HighStakesPro]

Nice one, but my teacher will have no clue what you are talking about.

[isapistola]

basically, youre asking us to do your homework?

[furyshade]

a red light district is like a series of tubes...

[plzleenowhammy]

The red light district is like itunes; anything you want is just .99 away.

The red light district is like a bad beat story; it starts out with laughs and smiles and ends with busto.

[Spechel EDD]

[censored] HIGH STAKES PRO

[friskyfleabag]

Prostitution is like drug dealing, except the prostitute can wash her crack and resell it.