Top definition
Australian slang when referring to Americans.
Septic Tanks = Yanks.
Those seppies in the lineup at Snapper Rocks was super annoying this morning.
by donnerdag October 25, 2013
Get the mug
Get a Seppies mug for your friend Callisto.
Probably the coolest person in existance at the current date, May 7th, 2006. Never since Jesus met Cassanova was there this much pimpage in a single social setting.
Also used as slang meaning "Person worthy of worship and adoration."
You're alright, but you arent a Seppy.
Oh man, Tom got a threesome last night, he is the official Seppy of the week.
by Adam the Pimp May 07, 2006
Get the mug
Get a Seppy mug for your barber Zora.
An insult of the highest degree, used to describe someone who enjoys taking it up the ass and fucks sheep in his spare time (which is all the time).
Man, I hate that twat.
Yeah, he totally is a seppy.
by SkaraMog July 30, 2006
Get the mug
Get a Seppy mug for your guy Callisto.