Effectively every part of The Urban Dictionary Terms of Service is violated by 80% of posts.
They're fake.
Guy: Yo where'd you get your mug from?
Guy Who Bought Mug: I got it from Urban Dictionary! You can pick any word you want and its definition and get it put on a mug for $32.95! Just look at these Urban Dictionary Mug Reviews!
Guy: You know these are fake reviews, right?
Guy Who Bought Mug: what
When you go on urban dictionary so much that you decide to use the newly found definitions on everyone else...
The severity can often be pretty large due to the very random things in which go on.
Person when he/she is urban dictionary infused: "Well I have been mindlessly searching for hilarious words for ages. I might use one on my friend and call him a cockjugglingthundercunt."
the describing of someone new to ||Urban Dictionary|| who doesn't know how to properly use it
Person 1: Hey I just posted a family-friendly definition on Urban Dictionary!
Person 2: urnew dictionary
an act that i will perform (they will do it)
i need to put getting banned on urban dictionary here to submit the post
Person1: dudeeeee, urban dictionary needs some holy water RRRRRRRRRRRRRRRRRREEEEEEEEEEEEEEEchex gomoku
A phrase usually used when people see a word or phrase that definitely shouldn't be in the dictionary, but is.
Alex: Did you know that "sexathon" is a word according to the Urban Dictionary?
Robert: How is that in the dictionary?