1) Anoter one of many terms designating a type of fart. The "blat" is designated by an explosive blast of rectal gas. While the sound is ferocious, the smell is usually deadly. However the duration (of both the blat and the people standing around the blat-ter) is very brief (pun intended).
2) The type of fart typically associated with "Ocky" and "Clutcher" in the less-well-known comic series of the same name.
3) Designating one of the the two most obnoxious sounds of the tuba. In this context, the term is often spelled "blatt" and associated with "the other" obnoxious sound of the tuba, the "woop". Often the two sounds are grouped together (e.g. "blatting and wooping").
1) We were playing cards when all at once... BLAT! Grodie let one go, and the game was immediately called off.
3) Tubas... we're going to try that again. This time without the blatting and wooping.
Sucessful completion of the sex act, but only after outrageously exhaustive efforts. Usually used to describe a rather un-satisfying sexual experience which one has been working very hard at achieving and, upon completion, does not think it was worth it.
"Lisa was playing hard to get. I had to take her out six times and spend a fortune on her to get laid, and then all she did was lay there and complain the wholetime. What a choregasm!"