Short for "The Bomb Diggity", often expressed spontaneously or with excitement to describe something of pure awesomeness.

When you eat dirt for the first time and leave your family to build a shack in the woods

The BD, aka The Ben Drain, Is a fingering technique invented over 7 years ago by Archbishops School pupil Ben Drane... Altho questioned by many of his friends to be a fake and improper way to pleasure a woman, The BD has remained close to many boys hearts and some have even taken the technique into Adulthood.

The correct procedure for a BD is.

1 - Fold your 2nd and 3rd fingers over so they press agaist your palm.

2 - Insert Your smallest finger and your Index finger into the Vag.

3 - Open these two fingers as wide as you can.

4 - insert your 2nd and 3rd fingers into the already gaping Vag

5 - Rub intensly or slowly for desired effect.

"Trust me, the girls fucking love it" - Ben Drain