Lincoln would be ashamed.

You'll come across a fair number of these type of "one-offs," reserved for situations when I had neither a storyline nor a strong character-oriented joke on hand. While I was slinging puns like this long before "Mother Goose & Grimm," that doesn't make it acceptable. And technically, this isn't a pun per se, but a contextually-dependent "play on words," more sophisticated than a mere garden variety pun. Not funnier, necessarily, just more sophisticated. And isn't that a quality you look for in your college paper comic strip?