Buy a cage of hamster and record its behavior like eating grains and doughnuts
sleeping drinking brown colored water, etc. Label the cage as Doughnut & Hams(ter)fort.
Make the video into a screensaver, download into your PC. Feed the hamster to stray cats.
Replace the brown colored water with Carlsberg strong beer.
Place the cage next to your PC, turn on the screensaver at night.

Return next morning and close the cage door with the drunken rat sleeping inside.

Relabel your cage as Doughnut & Ramsfort.

:P

















PS: This joke is original.