When you see a status on Facebook, and you like it within one minute of its posting. Can be conjoined with megalike to form the megainstalike.
by poobicus October 25, 2010
The act of receiving, or giving, a Facebook 'like' instantly after posting a comment or status update.
(12:30) Dan: "Keep your pimp hand strong"
(12:30:05) Cody: *like*
(12:32) Dan: (to himself) "Ah, an instalike. Nice."
(12:30:05) Cody: *like*
(12:32) Dan: (to himself) "Ah, an instalike. Nice."
by Big C My Friends May 08, 2011