Maybe (s)he is trying to brag? While in English, as a Yiddish loan, "s(c)hmuck" has penile denotation and pejorative connotation, in Yiddish and German that is a derivative sense; the root meaning is "decoration, ornament", related to the verb in the German hymn title Schmücke dich, o liebe Seele, traditionally anglicized as "Deck thyself, my soul, with gladness".

Liland

PS: However, I suspect my conjecture goes beyond what the GUEST intended. It is a less than serious way to identify oneself.