TOPO Tee White

“The funniest joke about topologists, is that they can’t tell the difference between a coffee mug and a donut.”

A topologist is someone who studies Topography, and that is the study of the forms and features of land surfaces. The topography of a coffee mug and a donut are basically the same when reverted into rudimentary topographical shapes. Hey, it's the best topographical joke you are going to read on this site.