Transpositional pun

A transpositional pun is a complicated pun format with two aspects. Initially (like many other pun formats) it involves a clever redefinition of a well known word. The second aspect is that this redefinition occurs as the result of the transposition of the words in an otherwise well-known phrase or saying.

Some examples:

Alimony:	The bounty of mutiny.
Hangover:	The wrath of grapes.
Olympic Officials:	The souls that time men's tries.
Saxophone:	An ill wind nobody blows good.

As a result, transpositional puns are considered amongst the most difficult to create, and commonly the most challenging to comprehend, particularly for non-native speakers of English.