squirt (v.) Look up squirt at Dictionary.com
mid-15c., squyrten "eject water in a jet," of uncertain origin, probably imitative. Related: Squirted; squirting.
squirt (n.) Look up squirt at Dictionary.com
mid-15c., originally "diarrhea," from squirt (v.). Meaning "a whipper-snapper" is from 1839.