Nowadays mouseplay means to take a breather from work and to escape your boss it comes from the popular expression "when the cat's is away, the mice will play."
Mouseplay stems from the original usage by Shakespeare in 'Henry the Fifth,' in 1599 - "Playing the mouse in absence of the cat" (Act 1, Scene 2, Page 6, line 195). Older versions include the Latin proverb - "Dum felis dormit, mus gaudet et exsi litantro" – 'when the cat sleep, the mouse rejoices and exits the hole' and the French version - "Ou chat na rat regne" -
when a male chops his cock off with a cleaver and then shoves the dethatched cock into the females anus and then has the female suck his cock as he sucks on the bottom on of his dethatched cock while its still in the females ass as he shoves a mouse in the females vagina while she's on her period
he gave me a mousepad and then died it was so sad but worth it