Noun: An uptight, anal teenager that acts very much like a man in his 30s
Verb: to act like a schmeckl
Adj: being like a schmeckl
Adv: (Schmecklishly) doing something as a schmeckl would
Nick is such a schmeckl.
Did you see Nick at the show? He schmeckled all over the place!
Stop being so schmeckl, Nick.
Nick walked down the street rather schmecklishly.