hank panky

NOUN
10 LETTERS · STARTS WITH H

hank panky is a valid 10-letter word worth 25 points in Scrabble and 26 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
H4A1N1K5P3A1N1K5Y4
4 + 1 + 1 + 5 + 0 + 3 + 1 + 1 + 5 + 4 =25 PTS
DOUBLE WORD → 50TRIPLE WORD → 75
MEANING

What does hank panky mean?