1) when someone has been drinking all
day, and no shower, and their stench smells like a radiant mix of tuna and
poop. Usually due to excessive farting/sharting mixed with unnecessary levels of
alcohol consumption. Sometimes results in living organisms, mainly tuna-fish, crawling out of your rectum.
2) used to describe an exceptionally vile human being
1) Oh my god, dude
that guy smells like tunapoop. (proceed to
vomit)
2) Dude he's being really tunapoopy lately, and I
don't know why because he's usually cool.