When you pick up a slut
on a long airplane
trip and have sex with them in the plane toilets to pass the long hours of time.
A combination of Jet Lag
and picking up a Jet Slag
. Not only are you tired from the long plane trip but your tired and in need of a shower from all the fucking
you have done on the plane.
Pretending you are jeg-lagged when you are hungover from the whiskys on the flight.
Why are you being such a cunt, I am jet slagged
Someone who flies too much
"No wonder Jack's got jet lag, he's a jet slag"