To do something poorly for the whole of a match, and then ambush the opposition in the last few minutes.
See England-France, June 13 2004, Estadio da Luz, Lisbon. Zinedine Zidane scores two late goals to sneak a victory over England, after England had lead for 90 minutes
from the latin zingus, used after an especially bad joke has been told, with the teller of the joke yelling "zinger" with an emphasis on the letter "z". This is usually punctuated by the joke teller then making double fistguns and waving them at the subject of the joke, such as Shooter McGavin does in the movie Happy Gilmore.
Derogatory slang term for Cajuns - people who live or lived in or around Louisiana. Etymology unknown, possibly related to the perception of loud, caustic behavior, similar to the use of zinger to describe verbal or written insults.