Shaina yourself in

When someone invites them self into your home/apt. The origin of this phrase is someone that is unvited barging into your place, but it can also be used for a planned visit.

“We had plans to meet 11pm, but 10:15pm rolls around and I find my friend sitting in my living room uninvited”

“You gotta keep your door locked so people don’t Shaina themselves into your place”

— — —

“Hey wanna chill later?”
“Sure I’ll leave the door unlocked, just Shaina yourself in”