Today's example was in a local newspaper, but I've seen this problem many places. What is the problem? The difference between "every day" and "everyday." (Yes, I am aware that the last sentence is a fragment. It was done intentionally.)
"Everyday" means normal, common, or ordinary. So, does this ad mean "an ordinary, common, normal party in May"? Or does it, perhaps, mean "A party every day in May"? In other words, a party that happens daily. The latter is what I believe was meant. It's unfortunate that whoever designed this ad didn't know the difference between "everyday" and "every day."
There's my sample for today. Check back to enjoy others as I find them.
(A note on the picture. It was taken from a rather fuzzy newspaper with my cell phone camera, so the quality is not high. But it should get the point across.)