You ask to the spectator borrow two coins and, at the same time, you show your pockets completely empty. Now, you put the two coins in your pockets, one in the right pocket and the other in the left, and the spectators can touch and feel that the coins are really into their pockets:
– “At this precise moment we are in the PRESENT, right?! The coins ARE IN the pockets!”
Now you take the two coins from the pockets and, visibly, you put one in the right hand and the other in the left:
– “Now, the ‘coins in the pockets’ are already in the PAST, right?”
You close the two coins in your fists… a magic gesture and, you are ready to create a real travel back in time! You open your hands and show your audience that the two coins have completely disappeared! They reappear one in the right pocket and the other in the left.