Black Tar Heroin; aka H, Ron, Tar, The Black. It is a substance varying from powder to a sticky tar-like consistency with color ranging from orangish-brown to black. It is consumed by placing a small piece of BTH on the dull side of tin-foil, and administering flame to the underside of the tar, in an attempt to heat the substance substantially enough to phase-change to vapor. The user leads the gooey trails with the lighter in front and follows behind with a straw in mouth. This process is also commonly referred to "Chasing the Dragon."

Contraction of "bored, tired and horny".

a) an abreviation for the term "big time huge."

b) a poor attempt at creating a phraze similar to BT for big time. the phraze BTH has caught on in popularity due to the immense amount of stupidity that it entales.

Blessed Thomas Holford Catholic College is a secondary school based in Altrincham, Greater Manchester. The school specialises in maths and computing, and is named after Blessed Thomas Holford, a 16th-century priest from Cheshire. The college has a strong Catholic identity,and all pupils are required to wear uniform.

This is what Wikipedia wants you to believe.
Unfortunatley, it stands for British Torture House, and is exactly what it says on the tin.

acronym for "Brent that Hoe"; to simultaniously insult a girl while attempting to get her to come home with you for the purposes of sex.

Better Than HIM. HIM is a horrible, emo, girly, garbage band from Finland.

"Big TiTTy HoE" ShoUt OuT To Da