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1.
Quite simply, call then drop - usually used as a reminder or so that someone can save your number. A call drop is a "missed call"; it is not a call which has been lifted.
"Yo Dave! What's your numbaaa? "
"give me yours and I'll calldrop ya!"
"07.."
*bzz* *bzz*

'You have 1 missed call from 07..'

"Sweet!"
av dannerz 28 juli 2006