LYG is the acronym for "Lose your Girlfriend." An alternate version is LYB for "Lose Your Boyfriend."
1. A discreet way to encourage someone to leave their hopeless significant other.
2. Passive-aggressive way to tell someone that their partner is annoying.
3. A concise pick-up line.
While on a date, if your girlfriend talks on her cell phone for thirty minutes without acknowledging you, the kind waiter may say "LYG."
Tina: Yeah, those comedians are funny or whatever, but have you guys heard of Dane Cook
Your Friends: LYG.
If your boyfriend keeps chatting it up with someone else at the bar, the cute bartender might wink and say, "My shift is over in 10 minutes. LYB."