Dirty.

↓ Transcript
ALT - 0023: CLEAN COEXISTENCE

[ Panel 1 ]
CADENCE: Dude, seriously, do you EVER wash your dishes?
:: Holding a filthy plate with food on it, she stands behind Joseph who isn’t really paying attention because he’s playing a classic Nintendo game. ::
{ click }
JOSEPH: Sometimes, yes.
CADENCE: Joey that’s just DISGUSTING!

[ Panel 2 ]
CADENCE: You realize that’s where MOLD comes from, right?

[ Panel 3 ]
JOSEPH: …like my plates are a moldy dating service, where single molds go to get together and PROCREATE?

[ Panel 4 ]
:: A sophisticated looking green mold creature sits smoking a pipe in front of two moldy children. ::
ED MOLDSBY: …and that kids, is how I met your mother.