The act of pulling out halfway through sex then lighting your partners pubic hair on fire. Once you have done this you must then continue to scream "you can't catch me" until the pubic hair of your partner has been extinguished.
The term is derived from the pokemon charazard and the screaming is used because of the catch phrase for pokemon "gotta catch them all".
Charratte is used mostly as a exclamatory word. Besides, often it is used to describe a happening as the best one. It is used as a synonym of "to hang out". Used both in slang Bengali and slang English.
Used in Santiniketan