This might make you feel supremely ancient, but Aug. 11, 2011 marks the 20th -- yes, as in two decades -- anniversary of the debut of 'The Ren & Stimpy Show' on Nickelodeon. The beloved animated series followed the tense friendship between chihuahua Ren Hoek and Stimpson J. Cat.

It's hard to believe that the gross, black humor of 'Ren & Stimpy' was able to pass as a children's cartoon, alongside the other first Nicktoons, 'Rugrats' and 'Doug,' but five years on Nickelodeon doesn't lie.

Without 'Ren & Stimpy,' we wouldn't have 'Beavis and Butt-head' or 'South Park,' nor would the 'Log' song get stuck in our heads for days at a time.

Frequently straddling the line between disgusting and fun -- well, actually, make that crossing the line -- there are plenty memorable moments from the series, which was revived on Spike in 2003 to poor reviews and we're just going to pretend that didn't happen. Below, AOL TV relives some of the grossest scenes -- and a couple of just plain fun ones too.

FUN: Happy Happy Joy Joy



DOUBLE FUN: Log!



GROSS: Kowalski's burp



DOUBLE GROSS: Stimpy's magic nose goblins (a.k.a. dried boogers)



TRIPLE GROSS: Ren eats kitty litter



QUADRUPLE GROSS: Ren's toothache



Of course, there's a lot more where that came from -- we just couldn't find more clips on YouTube. So, tell us: what are your favorite gross (or fun, or both) moments from 'Ren & Stimpy'?