Crib Shopping

At a bar, while watching the Packers game, one of my Packers buddies explains his plans for next weekend.

"Yeah, since the Packers play on Monday night next week, my wife and I are going crib shopping next Sunday. You know, crib shopping, not shopping for a house, but crib shopping."

This explanation is accompanied by hand gestures that seem to be indicating a rectangular sort of shape. I'm assuming it was meant to be a crib.