word play jokes

So I was in the chemist lab and I said to the assistant, “What gets rid of germs?”

She said, "Ammonia cleaner."

I said, "Oh sorry, I thought you worked here...”

First Student: "Great Scott! I've forgotten who wrote 'Ivanhoe'?"

Second Student: "I'll tell you if you tell me who the dickens wrote 'A Tale of Two Cities'?"

The FBI and the DEA are joining efforts and will be assigning some of their agents to a quasi-FBI/DEA enforcement team specifically targeting the illegal allergy pills sales that occur on the black market.

The agents will be called "Pseudo Feds!"