The Dollar Pants Glitch

The Exploit:
The dollar pants glitch was a glitch that allowed one to gain infinitely many Dollar Pants at no expense.

This was done by placing any item(s) in the crafting grid of a crafting table, and then removing it(/them).

This glitch was caused by the fact that a version of the Dollar Pants crafting recipe was comprised entirely of "air".

The glitch was soon patched after its discovery.

(This same glitch occurred with the turtle chestplate and turtle leggings (now patched).)

Trivia:
Ninja Man obtained over 500 Dollar Pants by exploiting this glitch.