Crazy Cash by Dan Harlan Full Performance
Learn it here:
https://www.penguinmagic.com/p/13634
In Crazy Cash a bill is borrowed from your spectator, and folded into quarters. The spectator then signs the folded bill, which is then legitimately torn into four equal pieces. First, two pieces are fused back together with the opposite edges touching, and then the other two pieces are joined back together with their opposite edges touching. The outside corners of the bill now meet in the center with the outside edges becoming the torn edges. The spectator’s signature never leaves their sight and the mismade bill can be handed out immediately for examination.