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Often occurs after a big night on Methamphetamines or MDMA (ecstasy). The size of your penis will shrink to a childlike state (<5yrs) after excessive consumption of either of the stated stimulants/substances.

Don't worry, it will return to normal size within the next few days; the length of time probably depending on how much of the drug you have taken.
"Fuck, I can't show her this--I feel like a toddler when I look in the mirror. I got meth dick bad."
by Mojo Rising September 28, 2006
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2
Often occurs after a big night on Methamphetamines or MDMA (ecstasy). The size of your penis will shrink to a childlike state (<5yrs) after excessive consumption of either of the stated stimulants/substances.

Don't worry, it will return to normal size within the next few days; the length of time probably depending on how much of the drug you have taken.
"Fuck, I can't show her this--I feel like a toddler when I look in the mirror. I got meth dick bad."
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3
An erection that is incabable of becoming limp, even after ejaculation due to the use of meth.
I came three times, but couldn't get rid of that methdick last night.
by Papawood December 08, 2003
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