A "homeless" person who lives on the street.The one with no teeth,dirty as hell,and talks to himself outloud while making no sense at all.Sleeps on a piece of cardboard
In downtown San Francisco,you will see many "slapjacks" on the street during the "wee" hours of the morning.
by Robo93 November 27, 2006
To jack off slowly not with the purpose of ejaculating but with the purpose of getting primed up for your significant other to walk in and finish.
Shook was slapjacking in bed waiting for his girl to come in. She never walked in and the slapjack went to a fulljack.
by Chaitdeezy March 8, 2016
by Reckewww01 January 26, 2019
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by Cooter April 20, 2005
When the penis is removed from the oral cavity during fellatio and the recipient graciously ejaculates into one's own palm. The person providing fellatio is then slapped with the semen ladened palm, spreading the viscous emissions across the face. Generally considered a demeaning act.
He was delighted that his partner pulled out of his mouth prior to ejaculating until suddenly he found himself the recipient of a Seattle Slapjack.
by Truckdriver April 15, 2009
by JoeGrizzly October 21, 2011