Technology / Motorcycle / Tank Slapper: A rapid, high intensity oscillation of the handlebars (literally, slapping the tank side to side). It is a condition of dynamic instability, such as hard acceleration out of a bumpy corner. Classic case would be the rider landing a botched wheelie with the handlebar/front tire turned instead of straight and square.
Entertainment / Photography / Tanks: Containers for holding chemical solutions for processing films and plates. MORE
Entertainment / Tennis / Tanking: To purposely lose a match, because of poor mental game or other reason; or to purposely lose a non-vital set, so as to focus energy and attention on a match-deciding set. MORE