Doonesbury by Garry Trudeau for June 03, 1972
Nichole: Hey, Bernie, what's up? Bernie: Nichole, have you seen Zonker? I've got to talk to him! Nichole: I think he went down to Walden puddle. Bernie: Walden puddle?!...Oh, no! That's what I wanted to talk to him about! Something terrible has happened! Zonker: Evaporated!