An Acronym for Sexual Transmitted Affection. The medical term for Catching Feelings after engaging in intercourse with a person with whom you previously had no strong feelings.
I thought it was a one time thing with Tyler, but now I have an STA.
Sta is an amazing person and is very tall, She is not a bully but an angel that comes from its hometown heaven. She is always nice to her friends and always helps them when they're down.
Girl 1: "Sta is soo nice!"
Girl 2: "Of course she is, it's sta!"
Girl 3: "She always comforts me"