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1.
Usually used as an alternative, cutesy and almost baby-speak term for 'Sleepy'.
Looking at anyone/anything that is almost asleep, or referring to yourself:
(A half asleep puppy, or animal, is one example.)

'Sooo shreepy...'

or

'Aww, shreepy.' or 'Aw, they're shreepy.' and other variations.
by unchartedcities February 10, 2011