In Central America, the boys just go 'sssss sssss' with their mouths at girls they like... like a succinct snake. Much to my disappointment, I didn't get a single 'sssss ssssss' (except from my friends which more like pity ssssssss's) but our female friends got it all the time... sexists.
I've heard "Did it hurt?" "What?" "Falling from heaven" which is so cheesy I've actually seen it work. I know dudes that think if you can get a girl to groan or roll her eyes, you're in.