Open Loop T-Shirt

Some of you be a strange loop, but that's nothin' compared to the wondrous and incomprehensible behaviors generated by an open loop. Why let the rest of the world have all the fun? You too can bring 4 carry-ons when the sign says 2, or bring 30 items to the express check-out lane and pay for your stuff in pennies. All we ask is that you clearly identify yourself with a LabKitty Open Loop shirt so that the rest of us can steer a wide path around your right-plane eigenvalues. Danger sign with international "no feedback" symbol below.