I am the crude one.

[The Mad Monk]

Now **** off, *******s.

[giblets]

How is this different from rude

[The Mad Monk]

Rude people don't care for social niceties, but may refrain from using harsh language for whatever reason.

Crude people may care for social niceties, or at least within their circle, but it doesn't extend to language use and / or socially unacceptable behavior.

[Sava]

Dingleberry