I have no trouble getting numbers, its simple - just dont wash your car for a while, once the dirt has built up then on the back window use your finger to write into the dirt the following:

Honk if you are horny and call me on <<insert number>>

Drive around doing some crazy lane changes or wait at green lights and the honking comes easy,  you probably hear my satisfied customers when you are in traffic,  every horn honk i hear makes me feel more loved.   

Qatars best known Pirate - Yaarr!