\textbf{Joke 86 [$P,M,A$]:} A neutron walks into a bar and orders a drink. ``How much do I owe you?'' the neutron asks.	The bartender replies, ``For you, no charge.''\\
\textbf{Joke 94 [$P,M,A$]:} Two atoms are walking down the street when one atom says to the other, ``Oh, my! I've lost an electron!'' The second atom says, ``Are you sure?'' The first replies, ``I'm positive!''