example 1: ur mom is a very awful insult but is very funny at the same time lots of annoying kids say it lol
example 2: ur mom is the conjtuble verb referring to a body or group that is being particularly crappy, assay, or just overall bitchy
ur mom is so fat ๐๐๐ก๐ก
somebody being very obnoxious and replying with two words.
Matthew: Hey what's up!
Francene: Ur Mom