smuff off 

A highly intelligent human being that simply does not give a shit about the tasks at hand. Combination of the words "smart" and "sluff off".

Damn. Mike got a 1600 on his SATs and a 36 on his ACT. Instead of attending a top tier university like Duke or Harvard, Mike will be attending a community college 3 blocks from his house due to his 1.7 GPA. Mike's parents must be disappointed in their smuff off of a son.

smuff off by lsukev January 13, 2008

Stuff Off 

It's like saying 'fuck off' but normally used as an extremely serious manner. British term that although does not posses any swear words has a deep meaning.

Dave: Hey man sorry I broke your bike
James: I can't get it fixed, and that bike was a gift from my dad before he left
Dave: It's no big deal, calm down. You need to stop getting so stressed about everything.
James: You know what Dave, stuff off

Stuff Off by AndrewD340 September 8, 2013