Solve Math Puzzle

My wife just completed a 40 week body building program this morning
It's a girl and weighs 8lbs 4oz

Exactly four weeks ago, I entered into an intensive program to cut down my excessive body fat.
Remarkably, I've now reached my goal of losing 50% of my weight,
and they're transferring me to a new facility!
It's a half weigh house.

How do you milk sheep?
With iPhone accessories.

Bros don't let other bros walk around with an open fly.
It's called the zip code.

If you drive a Subaru in reverse, what are you?
U r a bus