Nothing wrong with trying to have a little fun or posting something that makes you and others laugh. I vote based on the contributor. If the meme is from someone who is a good community member I'll upvote it. Especially if it makes me laugh.

If I ever get to the point where my vote is worth more than a dollar, I'd probably make sure that I didn't add more than $1 to a meme post.

What I won't upvote is one liner, link only posts, and memes when that is all the effort a contributor puts into every post especially when it's obvious they have no interest in contributing to the community.