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1.
noun: a lazy, unreliable person.
adjective: being generally lazy, unreliable, and flaky.
Josh is a complete dermer.

That guy is a dermer.
by bobby_peel March 01, 2011
 
2.
Latin term meaning "Skin" and some interpert it as meaning people that have large masculin organs
Hey! your dermer is freakin huge!
by Josiah Barlett August 17, 2006