Sigh. They do it twice, panels 1 and 2
“Snuck” is too common; everybody uses it (except my spell checker!) The correct word is “sneaked.”
In conversation, go ahead and say “snuck” if you want, but when you write nonfiction adult material, go with “sneaked.” No one will notice that you didn’t use “snuck,” but you’ll sound more mature.
Sigh. Here’s another one.
The Newark (DE) News Journal, no less. C’mon, guys—you’re professionals. It’s “sank”!
But this guy gets it right! Last panel.