Children's Aspirin Share definition Flag 1 part Captain Morgan, 1 part orange juice. Also known as a "rum screwdriver" or a "hammer." "Oi! Bartender! Fetch me a Children's Aspirin!" Children's Aspirin by James Rodesiler September 25, 2007 0 0 Get merch Get the Children's Aspirin mug. Buy Now — $32.95 See more merch