Bow Wow got the worst birthday present ever -- an egging, which his crew thinks came at the hands of his ex-girlfriend Keyshia Cole ... as breakup revenge.
Bow Wow tweeted early Wednesday that "one of his exes" egged two luxury cars parked outside his home -- fortunately for him, the culprit messed up and yolked his friend's rides. That friend posted pics of the damage and pointed the finger at Keyshia.
