pull a fast one on

VERB
18 LETTERS · STARTS WITH P

pull a fast one on is a valid 18-letter word worth 19 points in Scrabble and 25 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
P3U1L1L1A1F4A1S1T1O1N1E1O1N1
3 + 1 + 1 + 1 + 0 + 1 + 0 + 4 + 1 + 1 + 1 + 0 + 1 + 1 + 1 + 0 + 1 + 1 =19 PTS
DOUBLE WORD → 38TRIPLE WORD → 57
MEANING

What does pull a fast one on mean?