Whoever invented the knock-knock joke should get a no bell prize.
More from Mabuhay Net
LOST Swan Timer
Every 108 minutes, the button must be pushed.
Do Not Press
Whatever you do, you must not press the red button.
Bubble Shooter Made Easy
Because the original Bubble Shooter game is way too hard.
Word Magnets
Just like word magnets you might find on a fridge, but online!