A slang term for Dexedrine, a powerful stimulant, used for the treatment of ADHD. Dexedrine is also used by the military as a "go-pill" and is given to fighter pilots to stay alert during missions. Nicknamed dexy, it gets its name from the 80's band Dexys Midnight Runners.
"Hey, did you pick up anymore Midnight Runners?"

"Man, I just ate like 4 Midnight Runners and I'm speeding balls!"
by Lil' Brudder June 2, 2007
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Despite being constantly termed as a one hit wonder by those not educated about the them, Dexy's Midnight Runners is easily one of the best bands of the 80s. All three of their releases are considered classics among critics, fans and those who actually know the band for more than "Come on Eileen." Their sound changed throughout their discography. They're supposidly releasing a new record in the near future. For the most part their sound can be described as a mix between post-punk, northern soul, and chamber pop.
Dexy fan: Searching for the Young Soul Rebels by Dexy's Midnight Runners is one of the greatest records of all time.
Person: You mean those "Come on Eileen" guys?
Dexy fan: ...you're a tool.
by Avant-Shit October 25, 2007
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