A person that adds "schm" as a substitution to the beginning of words, or uses "schm" to create new words.
For instance, that food is lip schmacking good. And the already famous, Joe Schmoe!
Person 1 (the schmoddler): My dad just got a schmonsillectomy and he is in the recovery room right now.
Person 2: Do you mean a tonsillectomy?
Person 1: Yes, same difference.
Schmoddler: Traffic, schmaffic!, just take the back roads!
Schmoddler: Cops, schmops! My dad will bail us out if we get caught.
when you're holding up your phone and making faces at it, as though you are taking a selfie, but you're really taking a picture of the person across from you or the wall or anything else that seems interesting but you don't want to be caught dead taking a picture of.
This action is often made more convincing by wiggling the eyebrows or opening the mouth, to pretend you're trying to get a Snapchat filter to work.