You look like "jailbait"?

I was at the lake last weekend with my family and boyfriend. We met up with one of my mothers coworkers & her family. Her son told me I didn't look old enough to be drinking beer, then proceeded to tell me "you look like jail". I was a little offended, I mean is that a compliment or not?

Then later his mother told mine that he found me attractive and was trying to impress me the entire time...?

So is calling someone jail bait supposed to be a compliment or how am I meant to interpret that comment?
You look like "jailbait"?
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