Pot

Pot, also known as marijuana, weed, grass, herb, reefer, Mary Jane, ganja, kif, Aunt Mary, skunk, boom, gangster, among many others, is a drug best known for accomplishing what Mama's broccoli didn't, what Daddy's whoopin' couldn't, and nowhere near the shit your wife cooks. It has been described as "a blend between paradise, heaven, and ten thousand sexual climaxes at once", "the greatest known substance in the world, well, arguably, and it competes with many other of my favorite drugs" or simply "fucking awesome".

The drug has been labeled as illegal, despite the promotion of cigarettes.

Unbalanced arrests
Because of all the shit that celebrities are allowed to do, many personalities, such as Seth Rogen, for example, announced that he smoked weed regularly and nobody even gives a shit about arresting his ass.

However, as shown on many television shows, nobody cares if you're covered in blood and are holding a meat cleaver in one hand and a stabbed, dead body in the other, if you possess weed, that's what you're gonna get busted for. Otherwise, you is fine as hell.

National weed day
Because of the fucking dumbass ban of illegality on weed, people have decided that April 20 be the day that people fucking protest the shit outta pot-haters. The response the government has given has been:

"Who gives a shit? We're the fucking government, and we can do whatever the fuck we want. Fuck the pot-lovers. We'll just book and jail those muthafuckas."

Movies
Many films have been released that claim that smoking weed is completely fine, such as Cheech & Chong (and it's sequels), Pineapple Express, etc.