Just been thinking about this recently in light of my experiences so far.
1. gf
2. vgf
3. you lag
4. your dead
5. your gonna die
6. come back here u scum
7. i am gonna kill u and all ur friends
8. ur ship - its bugged
9. I cant hit u
10. not gf
11. fo
12. GGrrrrr
13. packet loss?
please add more if u can
Also, as these responses are generally accepted and said by some experienced players too - I will be throwing a 13 sided die (remember the old AD&D die - I still have mine) after each of my pvps to decide witch of these I will say after a fight - no offence intended.
For example, last night in New Berlin I told Angmar, Sauron, Evil one he lagged after a fight when I didnt really think he did, but the die came down on 3.
Any more common things said? I need seven more to get on the 20 sided die.