How to Cut Lunch to Make a Move on Someone's Girlfriend

Lunch cutter is an expression used by Australian football players to cram their packages into the extremely small footy shorts provided to them. The first definition that I read from Urban Dictionary is actually what Colin has to do later in this episode. He has to cram his package into an extremely small pair of speedos or I guess I don't know, a spare speedo speedo. And it took me instead to something on Amazon called bento cutters.