Made even funnier when saying "woosh" also makes no sense to the person that earned the "woosh", thus making a combo that cannot be countered until combo-broken.
Sometimes typed as /woosh in an MMORPG setting, as if something making no sense to someone was an emote of some kind.
dahll: "What are you talking about?"
grad-o: "2-hit combo!"
Response: "Hi Jeff!" *clap* *clap* "WOOSH".
You have now been wooshed.
2.(v) To pass by an object at such a speed as to make a "wooshing" sound.
3.(n) The handle of some British idiot with a penchant for various acts of dumbassery and creating some of the most homoerotic sprite comics ever to grace the interweb.
2. The car wooshed by.
3. I ran down woosh with my car.