An American client alighted from the elevator and was in awe. He just heard two Filipinos talking nonsense to his ears. These were the events happened inside the elevator:

One Filipino was on the 7th floor outside the elevator doors when it opened. The lift was going down to the ground floor.

Filipino outside elevator: Bababa? (rising intonation)
Filipino inside elevator: Bababa. (falling intonation)

The Filipino hopped in and left the American amused and confused while the doors close.

American client: Are these descendants of the Flintstones? Or this is just how simple their language is?