Faith healers do it with whatever they can lay their hands on Farmers spread it around. Farmers do it in the dirt. Farmers do it with cows, sheep and other assorted animals. Firemen are always in heat. First fiddles do it violently.
Fishermen are proud of their rods.
Fluid Mechanics do it smoothly. Flyers do it on top, upside down, or rolling. Football players are measured by the yard. Fortran programmers do it with double precision. Fortran programmers do.