Telephone Co. Employees let their fingers do the walking. Tellers can handle all deposits and withdrawals. Tennis players do it in sets. Tennis players have fuzzy balls. Tennis players do it with a racket.
Testators do it willingly.
The Mets did it in 69. Topologists do it on rubber sheets. Topologists do it openly. Transformers do it by coupling. Trombonists do it in seven positions.