I think "putangina mo" is the common word that we teach foreigners first. A co-worker here asked how to say good morning in tagalog and I replied with a serious face say "Putang ina mo with a wave and a smile". So she does it to our Filipino co-workers. She greets them "putang ina mo" and other filipino co-workers are game enough to say "Putang ina mo din". She found out the actual meaning of it eventually. She never asked me anymore tagalog words after that.