My son has this giant pimple on the edge of his ear... is this normal?

Pimples aren't normal so I would say no. You can get them anywhere you have skin

Pimples are kind of normal though @beebaby,

Well I way saying it more to the fact that it shouldn't be there.

I was just wondering if it's something I should talk to his doctor about.. @beebaby,

Looks like a bug bite to me

I know it's hard to see in the picture, he wouldn't sit still... but it is definitely a pimple @drmurphy13,