Possible Clues:

• Slapstick staple
• Comedic reaction involving a sprayed beverage
• Slapstick reaction
• Classic bit of slapstick
• Messy reaction to something shocking
• Comedic bit involving a sprayed beverage
• Reaction to an unexpected joke
• Wet reaction to dry humor?
• Ironic reaction to dry humor?
• Slapstick specialty