Is it normal that my boyfriend waxed my bum?

Your anus? Ouch!

Homeless people are not there for your amusement.

I'd suggest you go to a professional (or at least a girlfriend who knows what she's doing) because a) it will probably hurt less & reduce the chance of a breakout and b) sometimes there are little grooming secrets we should keep to, both males and females.

But, hey if he didn't mind and isn't acting strange afterwards, why not?

Gross

You're braver than I am. But seriously, any kinda waxing hurts much more when an amateur does it.