In the vein of "fuckin' A", this is amusingly juvenile shorthand for "suck my dick".
Note: This is included here because I want Everything to be Everything - including semi-but-not-really-obscure insults. Thus this node is factual, in that I am documenting early 2000's slang. If you are offended by this, well, you can L my B's.
man, it's lame when i have to include a disclaimer longer than my writeup.
if you can read this, you don't need glasses.