1. An abbreviation for Get Back To the Kitchen. It is a phrase used when a woman is in a place other than where she truly belongs.
2. It can also be used when a woman is talking nonsense, even if she is in the kitchen.
1. Woman: It was so nice of you to bring me out for a romantic walk on the beach tonight!
Man: Yeah... well now I'm hungry so GBTK
Woman: Okay! What was I thinking when I got out??
2. Woman: Omgggg I <3 the Lakersss.. Kobe Bryant is so hottt did you see his dunk??!! <3
Man: ... Woman, please GBTK if you don't know what you're talking about.