A 'Melt' is a term used to describe someone who is often
clumsy, or silly. A 'melt' is a special kind of '
doofus' (but not completely stupid, as that would be rather
mean).
Ryan: Eshara, what number are you on now?
Eshara: You
don't have my number saved? Gosh, Ryan, you are such a melt.
Ryan: What does that
mean?
Eshara: It means you are a special kind of
doofus.
Ryan: Oh I see. You are so wise Eshara.