Prostitute's joke

Sunday morning was white, and the old garbage collectors lined up. At one command, the police rushed into the garbage dump and picked up a lot of rags and socks. When the old man farts, it stinks to the second floor, and the king of the second floor is watching a play. When he smelled this fart, he was very dissatisfied, so he asked scientists to study it. This fart is called ABCD. And EFG, fart, eat chocolate.