Top definition
captain jack is a street name for heroin
an example of this is billy joel's song "captain jack"
"Captain jack will get you by tonight, take you to your special island, Captain jack will get you by tonight, just a little push and you'll be flying"
by matthew D December 10, 2007
Get the captain jack neck gaiter and mug.
Aug 11 Word of the Day
A phrase to describe someone who is cognitively degenerating. Synonym of "going off the deep end". Can have varying degrees of severity.

Reference to the song "Hey You" by Pink Floyd. The line "and the worms ate into his brain" makes no sense in an otherwise linear and literal narration throughout the lyrics.
"My boyfriend has a total case of brain worms. He told me the cat was bugged so the Feds could listen in on us having sex..."

or

"You totally stumbled over that entire sentence. Can't speak English all of a sudden? What, do you have brain worms?"
by _Jez_ October 03, 2009
Get a brain worms mug for your Facebook friend Julia.
2
A term used to describe the effects of drugs on a user.
A mythical figure who takes drugs users on a trip.
i.e. Captain Jack has led me into choppy seas, or The Captain has taken Kevin to sea and he won't be back for sometime.
by Rob Howe July 18, 2003
Get a Captain Jack mug for your cat Nathalie.
4
A Billy Joel song which is old but can still touch teens today. It's about struggle and bad luck, but the music with the lyrics is pretty well done. It will make you laugh but maybe also cry...
"Your sister's gone out, she's on a date... but you just sit at home, and masturbate..."
by GO KNIGHTS April 08, 2005
Get a Captain Jack mug for your guy Manley.
5
A reference to the television show "Torchwood", a "Captain Jack" refers to a problem solving technique in which a party seduces every person between themselves and their goal.

Captain Jack Harkness: "The last time I was sentenced to death, I ordered four hyper-vodkas for my breakfast. All a bit of a blur after that... I woke up in bed with both of my executioners. Lovely couple, they stayed in touch! Can't say that about most executioners."
Lucy : I can't believe I blew my professor and only got a "B".

Darcy : Well you know he doesn't even submit the grades. It's the teaching assistant that does that, and you should probably should also have fucked the anorexic guy that sends out the reports if you really cared about your grade.

Lucy : Hey, I don't think I could stand going full "Captain Jack" just for a good E-Sci grade. It's not like it was a core class. Besides, my TA was girl and she wasn't pretty.

Darcy : Sometimes you gotta take one for team Lucy.

Lucy : True that. My main skill is that I'm a massive slut.
by Darker August 04, 2011
Get a Captain Jack mug for your daughter Larisa.
6
Common in fan fiction, a "Captain Jack" is a fictional character who is a projection of the author's wish-fulfillment to the extent that it spoils the story. From the TV series "Torchwood"; Captain Jack Harkness is the immortal and flamboyantly omnisexual projection of Russell T. Davis, an aging gay atheist
You'd better re-write that chapter. Brian is turning into a Captain Jack
by Hastur T. Fannon April 12, 2007
Get a Captain Jack mug for your Aunt Beatrix.