...Tom Swifties.
"Who left the toilet seat down?" Tom asked peevishly.
"They had to amputate them both at the ankles," said Tom defeatedly.
History
While their exact origins remain uncertain, the spread of Tom Swifties in the United States was abetted by an article in the May 31, 1963 edition of TIME Magazine, which also announced a contest for its readers to submit their own Tom Swifties. Included was a special category, "TIME Swifties," which were to contain a reference to TIME Magazine;[2] however, only a few submissions were made of this nature. Among the submissions that were subsequently printed was "Someone has stolen my movie camera!" Tom bellowed and howled.
The TIME contest caused the popularity of Tom Swifties to grow, for a period of some years. Tom Swifties found a large teenage audience on the joke column on the last page of each month's issue of Boys' Life, the magazine for Boy Scouts.
There are two Tom Swifties that I remember well, because ... I think...I was the originator. Both are about toothpaste. Is that weird or what?
"Oh, I dropped my toothpaste" said Tom, crestfallen.
"Ahh!! My toothpaste tube exploded!!!" said Tom with a gleem in his eye.