A "Squeeba Dweeb" is a universal derogatory slang name or "Nick-Name" for a person with a wide variety of traits.
A "Squeeba Dweeb" has been formerly identified as a "Simp".. or "Nerd" or "Trick A** Hoe" of a person.
"Hey Todd.. Look at that "Squeeba Dweeb" over there, buying all that crusty broads drinks, he thinks he's going to get some poontang." or.. "Hey You "Squeeba Dweeb" get away from my car, your studded belt is going to scratch my paint"..
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.