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1.
To "Rofl" someone's "Copter" is meant to be sexual, and can take on any sexual connotation. Therefore, to rofl a copter could imply oral, sex, hands, or even weird creepy stuff like whacking off to Hannah Montana.
After all I did for Katie this Valentine's Day, she didn't even rofl my copter. What a bitchass.
by Creebie February 16, 2009
 
2.
The discreet emphasis on asking for a sexual favor.
Person 1: Why don't you roflmycopter?

Person 2: You're so kinky!
by XenPoseidon July 23, 2009
 
3.
rofling someones copter means giving them a handjob
if u rofl my copter and let me call u "sledge" ill give u 10 bucks
by 1337 m4st3r June 03, 2008