Also the one where Wally insists his towel gets cleaner every time he uses it: https://br.omega.com/dilbert/311.html
There's one somewhere where they're eating lunch and I think Wally asks Dilbert if he has any extra napkins and Dilbert says he won't know until he's done eating.
> There's one somewhere where they're eating lunch and I think Wally asks Dilbert if he has any extra napkins
This one: <https://dilbert-viewer.herokuapp.com/1994-10-29>