Definitions by Pitafin

bird dogging 

When another guy steals a girl from her boyfriend. It is used as a nasty,unethical, and immoral tactic. It is especially bad when the guy is (was) a good friend of yours and the girl is your best friend.

Joe was bird dogging Peter when he stole Megan from him right behind his back.

bird dogging by Pitafin July 18, 2006