So this is a funny one that works and I saw it on youtube.
So walk up to a girl with your hand closed and held out like you're holding something and you say "Can you hold this for me?"
The girl may or may not get freaked out right here. If she does, constantly reassure her it's nothing bad, not a bug or anything. When she finally holds her hand out, go to drop the object in her hand, and then just hold her hand.
She'll be both relieved it wasn't anything bad and impressed.
Just went out and tested it and got two day game numbers