omg idk i have a lot of these. i picked up "I love that for you" from a friend from texas and it is just such a wonderfully useful phrase and I use it all the time. also "you're so real for that" is something that I say probably like 30 times a day. I also like to do a little jig as like a physical comedy bit for my gf a lot and she loves to respond with "oh she's schmovin" which I love. Lastly I like to greet people I am close to in the morning with "gwamammo" instead of "good morning."
bonus is that a few days ago i decided that i am going to start saying "habby bippy" for birthdays