If you're going to a frozen custard joint, I recommend strawberry concretes with hot fudge on top (as in, not mixed in. might take some explaining when you're ordering.)

For those wondering, a concrete is just a shake that's a lot thicker than a shake. (ostensibly, some kid kept asking for it to be thicker and thicker, and the frozen custard guy obliged, and at one point made it thick enough that it was 'like concrete', and also, able to be flipped upside down and not run out.)