A competition between two humans where you duck tape yourself butt hole to butt hole & the winner is the first to push a poop (loaf) into the competitor.
Bro, I just challenged Tad to a Duck Loafing competition & totally won! That Lima bean salad was key.
Sandwich-loafing: when two bodies engaged in an amorous act are slapped together with something in between them, such as an item of clothing or a sheet.
"The nervous newlyweds were so eager to consummate that they were sandwich-loafing all night in the honeymoon suite."