The sign for "pineapple" has a couple versions.
I recommend you use the "F" hand near the "eye" version. This version
was shown to me by a fellow from Hawaii. Apparently it is based on the
"fruit hat" made popular by the Chiquita advertising campaign.
Hold the "F" hand in front of your eye (as if looking through the hole in
the "F") and twist it twice (as if adjusting a telescope).
PINEAPPLE (version 1)



PINEAPPLE (animated)


Another version of "pineapple" is to use a "P" (a "K" actually) on the
cheek. Twist it twice.
PINEAPPLE (version 2, initialized)



PINEAPPLE (version 2, initialized) (animated)

Notes:
In a message dated 11/14/2011 4:18:36 P.M. Pacific Standard Time,
Jamie Saunders writes:
Hi Dr. Vicars,
I really enjoyed showing your dictionary to my teachers and students a lot
and I am profoundly deaf/ native ASL signer myself. I noticed there is a
word needed to add to your dictionary: PINEAPPLE.. Can you please add and
thought a bit more about contrasting with PICKLE? My co-workers
(kindergarten teacher who is hearing ) and I debate what is right sign for
"pickle" and "pineapple." I have searched all online and PICKLE/PINEAPPLE
are similar in signs. I know you are very busy man and we would love to hear
back from you one day when you are free.
Much Thanks!
~Jamie Saunders
Jamie,
Hello :)
Well, for many years I did the sign PINEAPPLE using the tip of the middle
finger of a "K" handshape on my cheek. I differentiated the sign
PINEAPPLE from sign with PICKLE by doing the sign PICKLE near the corner of
my chin.
Then one day a friend who has spent some time in Hawaii showed me her sign
for PINEAPPLE using an "F" hand in front of her eye and explained to me that
it had to do with the "fruit hat" like the one worn by the "Chiquita
Lady" (in the advertisements by the Chiquita company that sells bananas and
related items).
Since the "F"-hand version of the sign PINEAPPLE is very iconic (the
extended fingers look like the leaves of a pineapple plant) and it has ties
to a cultural aspect of the usage of a pineapple (being with other fruit in
a fruit basket carried on the head) I was instantly smitten with the
appropriateness of the sign and I highly recommend it to you as my preferred
version.
Cordially,
-- Dr. Bill
See: PICKLE