You can do side bends or sit-ups, but please don't lose that butt!

Darren and I were talking about babies, and I was talking about Erin's cute chubby thighs.   Darren, replying about his six-month-old kid Henry, said "Henry's a really skinny kid.  You can still see his ribs."   I said it was fairly likely that Henry was destined to be an underwear model.

Later that evening, while playing with Erin, I mentioned this conversion to Ms. A.  Upon hearing what Darren had said about Henry, Ms. A looked down lovingly towards Erin and said with a straight face, "Last time we saw your ribs, Erin, was in an ultrasound."  Then, Ms. A cackled with laughter.  

This line of humor is so going to give Erin a complex in 14 years.