Boys vs. Boy's

Thanks to Tim for this one.     The apostrophe is unnecessary. This was found in an elementary school. Ah, me. 

Thanks to a student for this one. Of course, the plural of knife is knives. 

The second sentence has an error in subject/verb agreement. Air pressure is the subject and are is the verb. Are should be is. This is from the owner's manual of a 2008 Saturn Vue. 

The "E" needs to be moved out! Thanks to Pat for this one. 

I think it should read, "Oh, yes, we did." or "Oh yes, we did." There should be punctuation. 

No "e" in "moveing" necessary. Thanks to Pat for this one. 

Thanks to Tim for this one. I suspect that the author of this sign intends to express that he won't allow people to pay using coins. The problem is that he used EXCEPT instead ACCEPT. His sign actually expresses that he will receive change and will not turn it away. This was posted at a car wash/convenience store. 

Radiator. This one is from a gas station on Rodney Parham in Little Rock. 

Proofreader's FAIL!

Thanks, Carol, for this one. She found it at Searcy Suds. There is an extra "D" in "SOILDED."

Sunday should be Sundae. Thanks, Carol.

This is a t-shirt available on several websites. I've tried and tried to figure out why the apostrophe is there. If there were a dance named the Dolphin's Rock or if there were a place called Dolphin's Rock, the apostrophe would be acceptable. I think the shirt means that dolphins are awesome...they rock. I think the shirt should read "Dolphins Rock."

Thanks to astute former student Sarah for this one!   "Calender" should be spelled calendar. It appears that there is also an apostrophe missing in "childrens."