spanish girl: hey papi. are you going to vote.
black dude: yeah. who are you voting for.
spanish girl: um, i think i gon' vote for papi.
black dude: what. who. you meanObama.
spanish girl: Yeah papi. thats what i say, papi.
Precision Approach Path Indicator - Used in avionics to guide planes to the runway using the approach path (Glide Path).
A series of 3 or 4 lights that change colour from white to red in accordance to the height of the aircraft.
Red over Red - Too low Red over White - On the Glide path
White over White - Too high
The PAPI lights can be seen up to 5 miles in daylight and upto 20 miles at night.