Because 69 is a bit of a mouthful.
Because every time they get to 69, Miss Piggy gets a frog in her throat.
Because 68 69 70.
When you're buying salt.
Because when she gets to 69 she ends up with a frog in her throat.
She counts the legs, and divides by 4.
Just take it "For free What's the catch " No strings attached. "You son of a bit.."