This seems like a misspelling or typo of the word "straight." In the context of porn video tags, it would mean content featuring heterosexual activity. In a straight (heterosexual) scenario, the participants usually consist of one man and one woman engaging in various sexual acts. These may include but are not limited to kissing, touching, oral sex, and penetrative sex. It's essential to note that this term only refers to the gender identity of the individuals involved and doesn't imply any power dynamic or relationship status