Most Helpful Guy
be classy. roll a condom over a banana and write your number on it with a sharpie and leave it on his windshield while he is inside buffalo wild wings.
i've included an example
Most Helpful Girl
I was once scrolling through my phone at a cafe, and a guy who was working said 'nice phone, does it have a number'. It was a cheesy way to ask for my number, but I got a laugh from jt and he got my number. So I think your approach is fine! You could even suggest hanging out one time and then if he agrees, give him your number to organise something?