Appears In: Operation: P.I.N.K.-E.Y.E.Used By: Joe Balooka, Nurse Claiborne, and Numbuh 2Used Against: Various kids in school, Numbuh 86, Joe Balooka, Nurse ClaiborneInformation: These balloons contain water and pink eye-causing viruses which immediately affect the kids they hit, causing them to produce eye crust at an alarming rate. The water balloons are fired from a slingshot.