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1.
can be used as an adjective, verb, noun, etc.. meaning gross, sketchy, sick, cheezel, oddity, creepy, jorts ; it can mean a lot of things but you dont want to be called a schleem. originated from the word schlerm.
ew that was really schleemy.

im schleemin.

look at those schleems.
by livinitlaur August 05, 2008
 
2.
A small slimy object, such as a fish.
"that feels like a schleem to me" said the hombart.
by Ryan Ferris The 14th August 03, 2007