Explaining Mutts

Earl and Mooch are walking through a field of giant mushrooms.
"It's been an unusually damp spring." says Earl.
"Yesh." says Mooch.
See, mushrooms enjoy damp environments and so the unseasonably damp weather has caused them to flourish, but this would not actually be sufficient to explain their enormous size as depicted here. Mushrooms just don't get that big, so the casual acceptance of this wholly insufficient explanation is somewhat comical.

Comic