See pistol whore and sword whore. The term Rocket Whore applies similarly, but as rockets or a
rocket launcher is common to many more FPS(
first person shooter) games besides the Halo series, "Rocket Whore" is an older term, with a longer history, and (prior to the advent of Halo's Pistol Whore and Sword Whore was the predominant term.
Typically, calling someone a rocket whore serves only to point out to the rest of the people playing that you got your virtual ass handed to you by the rocketeer repeatedly for the duration of the game. Needless to say, this only points out to everyone within earshot of you that rather than
1: alert your teamates to the threat posed by rockets and adjust your collective strategy
or
2: adjust your individual tactics
you simply charged into the fray mindlessly, with little or no
situational awareness, (despite having been killed already by said rocketeer) and got blown to smithereens each time. God forbid you change your paradigm and produce an effective defense to a rocketeer, so that YOU might wield the almighty rocket launcher, and "pwn teh n00bs."
I got killed twelve times by that rocket whore! He sucks and has no skill! Get some real skill and kill me with a needler u rocket whore!!!
What a rocket whore. He got 18 kills, all using
the rocket launcher. Why didn't someone kill him and take it so we could
capture the flag?