A martial arts-like move made famous by Captain James Tiberius "Jim" Kirk.
The move involves folding both hands together and chopping down with both arms on the opponents neck.
Results do not vary - no opponent can withstand more than one Double Captain.
Did you see the episode where Kirk Double Captained that demi-god dude after fucking the green chick?
Pouring a bowl of Captain Crunch cereal, and instead of milk, you pour Captain Morgan to create a true breakfast of champions.
Me and my friend totally went double captain this morning.