[amdsn]

I remember slop, sloppa, etc. were frequently used terms on /ck/ (the cooking board) long before any nouns and adjectives were prepended to them. it is unfortunate that most 4chan lingo nowadays enters the mainstream via the /pol/ -> twitter human centipede, which usually means the words pick up a certain awful flavor from that board.

[nephihaha]

Sloppy is extremely common, more so than slop.