Doing a Jacko is that one friend who is always the last in a group at a bar/club in a round but has to leave before buying a round of drinks in return. He could be with a group of 4 to 5 people and everyone has bought a drink, but when it's his/her turn they either sneak out or make up some excuse for having to leave.
"Whose round is it lads"

"It's Dave's round, he said he was going to the toilet but I think he's pulled a jacko"
by Judgemental Prick May 29, 2015
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a word created by the tabloids to use instead of using the name Michael Jackson to make every news about him sound bad and sell more copies to fill their buckets with money even if it means destroying other people's reputation and lives
by Yazooop September 12, 2011
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Fecking legend!!! King Of Pop best artist there ever was and ever will be!
Bad, Thriller, Invincible, HisStory, Off The Wall so on!
by Samuel R Jinks November 23, 2004
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A nickname for jack, a very funny guy who loves green otter pops.
There goes Jacko with his green otter pop again!
by natojoan December 08, 2018
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Back door merchant who will pay off your mum for 5 minutes of kiddie sex
Better be careful or your kid might get jacko’d
by Howesluvsbrownie January 25, 2018
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Jacko is a popular name for a toy monkey and has a caring heart all girls want to be around him at all time
He is the smallest monkey but has a massive dick.
by TeddyBearBoy July 14, 2018
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