A erection that happens when there is no sexual stimuli present. Usually during untimely situations. Mostly present in males going through puberty, but can happen from time to time in adult males.
I was sitting in a Alcoholic Anonymous and suddenly had a case of zombie dick.

Mr. Kelley didn't want to stand up to teach his because he had developed a zombie dick grading papers.
by MillerMan0203 December 30, 2011
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What your finger looks like after injuring and becoming an absolute bloody mess under neath the fingernail
"You were so trashed last night when you slammed your finger in the door. How's that feeling today"
"Well, it feels fine, but it looks like a zombie dick"
by bamasa37sb34 January 20, 2014
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Typically occurs when she says it's that time of the month, and you drunkenly reply that you don't care and have sex anyways. Upon examining your penis post coitus, you realize that you now have a bloody Zombie Dick.
"Dude it looks like someone dipped a hotdog in ketchup and slapped your sheet like twelve times." "Nah man I just had an absolute Zombie Dick.
by JakeDaPillowSnake October 11, 2015
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When you're on something like cocaine or roxycodone and you're dick gets real hard but you can never cum.
Me: "Hey Dr. Dangus you rascal, listen to this. So I was doing some roxys last night and fucked this girl for like an hour, it took forever for me to cum, I had 'zombie dick' like crazy. Is that normal?"

Dr. Dangus: "I dunno, what do I look like to you? A fucking dick doctor?
by Col. Robert J "Clean" Mongoose October 21, 2010
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when a man cums inside a woman and goes limp with in the vagina and after three seconds the dick will rise and smack the top of the womans vagina while she yells its alive!!!!!!!!
Ted did a zombie dick last night
by Casey ''bigMAC'' McGinnis January 9, 2009
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1. To use one's penis to transmit diseases via sexual intercourse with multiple partners.
2. For an individual (particularly of the male sex) to seek sexual intercourse with disregard to one's self or another.
1.*"Hey, why is everyone angry at Todd?"
"Well, they found out he went around 'Zombie-Dicking' last night and now we've all gotta get checked."
"Goodness gracious... call the C.D.C."
2.*"I'm so worn out and my flesh hurts, man..."
"Maybe you should quit 'Zombie-Dicking' and get a hold of yourself before you catch an STD."
"I guess, bro-"
"Fuck you, Chad."
by CheddarMember December 21, 2019
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a spontaneous erection that refuses to go away, it sticks out similarly to a zombie's arms
Johnny did not want to go to the chalkboard because he had a classic case of zombie dick.

Kids going through puberty often have zombie dick.
by Dr.RickMarshall June 29, 2009
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