This is the worst phrase containing "Ur" in it. Every time this is used another big bang occurs wiping out everything known in the universe and creating a new one. For fucks sake who would use this?
little kid on xbox: ur mom gay
25 year old no life: ur granny tranny
little kid on xbox: no u
25 year old no life: reverse
little kid on xbox: ur dog a frog
*earth and everything else fucking explodes and a new universe is created*