worst comebacks?

[Kittay]

Yes, "ur mum" is most definately the worst comeback ever.

best one is when i used "ur face" as a comeback. oh man, i said it after everything. it was stupid, but it amused me more than most comebacks, to the point where my best friend got TOO annoyed. i said "ur face" to something she said, in which she replied "u killed it. its done."

....i simply replied "ur face killed it". genius.

Haha I say "your face" for everything too.

Worst comeback (that my ex-bf uses and is so childish): "I'm rubber you're glue..."