8DD

A modification of the '8D' smiley, which by itself is used to portray a manic sort of joy. The addition of mouths, aka 8DD or 8DDD or even 8DDDDDDD, implies a proportional increase in the degree of cheer.

Shopkeeper: You can have this family of kangaroos for free.
Me: 8DD

Boyfriend: PREPARE FOR SOME INTIMATE CUDDLING
Me: 8DDDD
Boyfriend: AND AFTERWARDS WE SHALL BAKE PIZZAS TOGETHER
Me: 8DDDDDDDDDDDDDD