Physics Humor design. Funny No Flux Given Physics pun tee. In Physics, if the field and the surface are parallel, then there is no flux or zero flux is given. This tee features a parallel surface along with the flux equation and the words No flux given. Funny No Flux Given physics and engineering tee with the words No Flux Given and the Gauss Law for Flux Dual wall insulated: keeps beverages hot or cold Stainless Steel, BPA Free Leak proof lid with clear slider