4F-MPH is pharmaceutical drug that was originally designed to medicate people that have Attention Deficit Hyperactivity Disorder (ADHD).

It was also put forward as a possible medication to help reduce dependency on cocaine for addicted users.

It is now commonly known amongst recreational drug users by the following names:
- super quick (quickie)
- charlie2 (becasue if it longer lasting effect and its similar chemical structure to cocaine i.e. charlie)
- turbo meth (turbo)
- Isao (abbreviated from Isao Machii, who is strongly regarded to have superhuman abilities which user's report to feel when ingesting the drug)
Recreational drug users like to take 4f-mph or turbo meth as it is commonly known, as a stronger and cleaner alternative to methamphetamine.
Today I am going to precribe you 4F-MPH.
by SweetpuffOriginal November 29, 2020
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A measurement that describes miles per hour covered in the terms of banter.
"We are travelling at banter mph!!!!!!!!"

"Why?"

"Umm..."
by L-Cooper June 25, 2009
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MPH 187:™️ murder proof hoodies is a custom bullet proof hoodies by 187™️ for thugg'z by thugg'z with front and back ballistic panels enough to stop a 357 mag don't get cot with out one 💯
Yo dog you ready for this ? We got everything don't for get your MPH 187 murder proof hoodies 187
by k187c January 17, 2022
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A pace of drinking which is intended to lead to a blackout. Blackout is essentially forward time travel. In Back to the Future the speed at which the Delorean travels through time is 88 mph. If you are drinking at a speed of 88 mph, you intend to drink yourself into a blackout.
Everyone is home this weekend we're going big. I'm doing 50 now but I'll hit 88 mph by midnight. See you tomorrow.
by Da Kuai January 10, 2012
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The optimal speed for hand jobs.
That girl went the full 45 mph with him.
by siimon202 February 6, 2011
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the speed needed to travel thru time
by simon February 16, 2003
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