Going shopping after having a cocktail (or two, or three); shopping while drunk. Generally most noticeable the next day when you realize what you (probably shouldn't have) bought.
(At the checkstand) Wow, look at my cart - - I'm totally shrunking!

What was I thinking, buying that outfit yesterday? I must have been really shrunking!
by Kat 6 August 5, 2009
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When you have too much sugar. Like when you're drunk on beer, you're "shrunk" on sugar
by SOMEONEEEEE December 20, 2014
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To drink so much alcohol that you dehydrate (through vomiting/urination/night sweats) and look visibly smaller the next day.
"I got so shrunk on vodka it looked like someone had put me in the dryer the next day."
by Jefira May 31, 2009
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"Shrunk" is a drunken mispronounciation of "drunk".
"Yay! Martinis! Let's get shrunk on Martinis!"
by sonny-boy August 20, 2003
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When you take a dose of psychedelic mushrooms and drink enough to be buzzed, you feel the effects of both and it is amazing
Anthony and his friends went to see Star Wars: The Force Awakens while 'Shrunked'

Anthony made friends with the guy to his left and almost got in an epic fight with the guy in front of him while Shrunked
by Sydonious April 24, 2016
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