From the mind of Ninh, Smagic bringing you: FAIR TRADE
A beautiful and amazingly visual transplant, transposition,
teleportation, sexual organ swapping position effect that 
happens in spectator hand.
Both spectators selected two card: One Red and one Blue
You then clearly and Fairly tear the corner of each card but 
still keep it attached.
Next you ask a spectator to hold on one card and then:
BANGGGGGGG!
Just a gentle tap, the corner of those two cards transform
itself into one another.
Now, check it!