Over at Shirt.woot.com they have an assortment of BBQ designs available on shirts and aprons. Their sale runs until 12AM on June 15th.
These are designs that were submitted in various contests that the site had and won.
They have other food related shirts at http://shirt.woot.com/catalog?category=food&ref=cnt_ctlg_tprev These are limited printing everyday so the if you want a shirt today and it is unavailable check back in the morning tomorrow to order.
Here are some of my personal favorite designs