But it does contain copious adult (and/or misspelled) language, violence, sexual innuendo, and yes, occasionally nudity.

It's YAWC (yet another web comic) - Exploitation Now. The particular comic I linked to here is rather tame (though it does have chicks with guns), but does have a good-natured joke at User Friendly's expense. :) Click if you wish. If features a 16-year old girl EVIL GENIUS with a cybernetic arm who rents out the apartment over her secret lab to a porn star and a talking animal character.

It's quite entertaining, but only comes out 3 times a week (sniff) so can't compare to UF or Sluggy for a good daily addiction.

If you want something with less porn and more plot, you might try MegaTokyo, YAWC about two American gamers' wacky adventures stuck in Japan with no money. Oh, and zombies.