snark monster 

A person who makes constant snide remarks. Someone who has lost the ability to speak without sarcasm.

That I.T. guy is such a snark monster. Of course I restarted my computer before calling him.

snark monster by WH Macy's day parade June 25, 2012

Snack Monster

A person who eats snacks more than actual meals

I had no time to eat lunch, so I had a bag of chips and 2 granola bars today like a true snack monster

Snack Monster by Whaler Jake November 13, 2014