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"
"It's Dave's round, he said he was going to the toilet but I think he's pulled a jacko"
by Judgemental Prick June 1, 2015
Get the A Jackomug. 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
Wacko Jacko dead at 50
by Yazooop September 12, 2011
Get the Jackomug. by Samuel R Jinks November 23, 2004
Get the Jackomug. Wacko Jacko has done it again.
by Vicky February 7, 2004
Get the Jackomug. by natojoan December 8, 2018
Get the Jackomug. 
A king dog ( usually dalmatian ), who is a wise boy and owns the McCourt family. Loves to eat chappy and occasionally leftovers.
by jqkisidkwkebd February 4, 2022
Get the Jackomug.