The state of being in which one is deprived of Call of Duty for extended periods of time. Similar to the condition of testicular congestion commonly referred to as "blue balls".
"Dude, I've got the green balls so bad. I'm only sixteen M9 kills away from getting my tactical knife! I haven't been able to play in almost a week!"
I was having anal with this vegitarian, only ategreens.. Once I discovered my cock was soaked in green shit I started pushing harder and harder, until she sputtered her own excrement all over her chest. Thus, the green dragon.