Jumping excessilvey (usually in a video game) as to make one's self harder to hit with harmful projectiles. Spending about the same amount of time on the ground as in a mid air jump during a given period.
"nice bunny hopping n00b! You cant fight me liek a real man I gues!"
Most likley derived from the term OMG by those who chose being offensive to the extremley religous more important than saving themselves the painstaking work of typing 2 extra letters or keeping the versatility of the term OMG (by narrowing it down to simply "Oh my god" instead of "Oh my gosh", "Oh my goodness", etc. )