[quickthrowman]

You’ll have to get a job at a county fair running the weight guessing attraction to get enough data. There’s no other way to do it, it’s how we all figured out how to estimate the weight of a human. I’ll call my friend Chucky, he’ll get you a gig in a traveling carnival for the summer.

[fuzxi]

Or simply any job that requires checking IDs. Bouncer, bartender, cashier in a store that sells alcohol/cigarettes, etc.

[garaetjjte]

Huh, I have never seen weight specified on any ID.

[fuzxi]

Every US ID and driver's license I've ever seen (and I've seen many) list height and weight.