Three or more dudes spooning with boners.
Three or more dudes have anal sex in bananna formation.
Three or more dudes with there boners cupping each others asshole.
Moback is that type of person to overuse the "Red B" emoji and also a person whom is very weak, He is often bad at games and usually clueless and most of the time a unresponsive person (Antisocial).
Guy 1: "Hey you didn't get my last few messages are you there bro?.."
Moback: *Checks message and leaves it*
Guy 2": "C'mon man and know you're there it says you're online"
Moback: ".... gtg"
a verbal instruction, guiding a driver of a truck/trailer in reverse. Literally meaning, "come on back." Originally from a racist joke about a garbage truck, e.g. What has 4 wheels, 2 legs and goes Momback? (or something like that)
driver: " I can't see the dumpster we gotta pick up. Can u get out and do the Mombacks?"
passenger: NP ... momback, momback, cut the wheel to teh left ... straighten out ... cool ... momback and ur good.
STOP DAMMIT!"