"The Oneliner file Annual" joke

Editors Note:
Here it is folks, the oneliner file. Over the past year, I have
received several short submissions that were mildly funny, but
not quite good enough or topical enough to merit their own posting.
I have collected them all for you, and it's time to flush the
buffer. These vary in quality quite a bit, and are not rated.
Please don't take this as an invitation to send me your own
favourite one-liner. There are thousands of these things in
the world, and I don't have time to sift through them except on
an infrequent basis. Remember, one joke per submission.
My advice is to read this file slowly if you can, one joke at a
time. Oneliner jokes are often ruined if read together in
a bunch.