Because the extra bean would be too farty.
Terri-fried!
Hit an Ethiopian in the head with a frying pan.
30 - One to hold the light bulb and 29 to drink until the room spins.
A: Paddy O'Furniture!
Because if you add even one more it gets "2 farty".
Because one more, and it would be too-farty.
If there were one more it would be two-farty!
Because one more, and it'd be too farty.