shada fudup 

When someone won't just shut up you may feel an obligation to say such a word

Dude just shada fudup for once

shada fudup by Jared Carlson December 5, 2004

SHADAFUQUP 

'shut the fuck up', but intensely bold and cutely concise.

Person 1: 0migawd pls do NAWT tell him dat ; r0fl lmfAO lolzsss xPPP

Person 2: SHADAFUQUP

SHADAFUQUP by woopsey July 30, 2013