It can be! It's mostly used for boys though.
Mickey is a dude, but he has his girlfriend Minnie Mouse.
mickey is a BOY
You just want two things ... well ... Mickey's a boy & Minnie's a girl. Minnie wears a bow & Mickey does not.
Mickey Cochrane's birth name is Gordon Stanley Cochrane.
Jarred Mickey's birth name is Jerry Harland Mickey.
Mickey Shuler's birth name is Mickey Charles Shuler.
Mickey Tettleton's birth name is Tettleton, Mickey Lee.
Mickey Washington's birth name is Mickey Lin Washington.
Mickey Gilley's birth name is Mickey Leroy Gilley.
Mickey Herskowitz's birth name is Mickey Leon Herskowitz.
Mickey Hays's birth name is Mickey James Hays.
Mickey Klar Marks's birth name is Mickey Klar.