Cheese Heroin

(Dallas, Texas) This is the first I've heard of cheese heroin.

From DMN:

A 19-year-old man was sentenced to 15 years in state prison Friday after he was caught last school year with about 40 hits of "cheese" heroin at Thomas Jefferson High School. The 7.3 grams of cheese heroin found on Luis Soto was the largest seizure recorded by Dallas ISD police during the 2005-06 school year, officials said.

A hit of cheese sells for about $2. As many as 17 or more youths have died in the Dallas area over the last two years from cheese heroin overdoses. Authorities are awaiting toxicology results on several other deaths.

Note that authorities found about 100 hits of cheese heroin in a 14-year-old girl's sock at a middle school in January.