A derogatory name for someone (most often a man) who partakes in anime (mostly for perverted reasons) and likes hentai (disgusting). They don't shower and/or wear the same clothes everyday without changing them, giving them their signature "chili" scent. Think your average disgusting neck beard.
"Wow, that guy is such a chili, avoid him at all costs"
The result of a particularly large, high pile of shit in the can causing you to sauce up your fingers whilst going for an ass wipe.
I only had five minutes before my lunch break was over, so I wiped fast and got out of there. It wasn't until I shook my boss's hand that I realized I had passed him a couple chili fingers.