One who will simp for any girl but is in no pursuit of a relationship. They aren't trying to swoop in when the chick's vulnerable, but instead do it out of pure benevolence. For this reason, Yahyas can be rather loving and they will always have your back, but it does get annoying for everyone around him.
Girl: wanna smash?
Boy: nah fam I ain't about that
Girl: you fucking Yahya