Should I ask him out?

If you like him, definitely mention hanging out sometime. If you don't, someone else might get him first.
Chances are he won't ask you, because you are a customer in the store, and he doesn't want to get in trouble.

Ask him out, something little though, like going out to get coffee on his break or something.

I say do what's effective. Try the dropping hints thing, if that doesn't work ask him out. Some guys aren't socialized and don't know how to read others yet (Everyone is still learning all the time, myself included), so they may need some guidance. Everyone who got what they really want in life took risks and paid the price (sacrifice, overcoming rejection to toughen their skin and get smarter etc.)to get it.

You're not a wimp, you are just learning which is something everyone here has experienced. It's okay and natural.

Take a risk! :) you will look back at it and laugh and have fun with this stuff later in life (I was so nervous about my first kiss.. etc) Constructive risks are fun (like learning how to perform music, overcoming a fear of roller coasters etc.) and you learn and grow from them.

If he says no then so what? You are back where you started and now you have peace of mind knowing that you tried. No "what ifs" bothering you. :)

Do it! Ask him out. If he says no, well, at least you know. If he doesn't you won't know. And if he starts the weird awkward stuff because you asked him, then forget him. You at least won't have lost an important friendship.

You know I just went through this with this cute waitress at the place I eat all the time. I decided that I would introduce myself then hand her my number. I said "if you're interested call me". Then I put it out of my mind. She never called, but that's not the point. It made me realise that I am in control of my love life and also that I can do it again because it was really easy.

I just went through the same thing with this guy that I like. I'm like you, I felt like I needed to do something because he seems too shy to make the first move. Anyways, if you don't want to be direct and say "go out" as in date and just say hang out. Then first think of a day you want to spend time with him, and go up to him and ask him "hey are you free (the day you had in mind)" if he says yes then ask if he wants to hang out that day. if he says no then ask what day he is free and go from there. If he doesn't want to hang out, then that's his loss.
Good Luck!

Don't ask him out, ask for his number. When you're in the middle of a really good conversation, say "Listen, I've gotta go, but I'd love to talk to you more. Wanna exchange numbers?" He'll probably say yes.What I'm not sure about is whether you should call him. What do you think?