I've heard humans have larger penises in proportion to our size than usual with mammals. Not sure how unique it is but the human glans is speculated to be shape

I've heard humans have larger penises in proportion to our size than usual with mammals. Not sure how unique it is but the human glans is speculated to be shaped like it is to scoop out sperm from competing males. Since human vaginas aren't "wild" like that of a goose, maybe that is how we have evolved to handle competition? This must go far back though, way before we became humans...