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a lil geo was formed by english speaking greek people in the late 1970's. it is a euthanism for people shitting a small amount in a small amount of time. it is mainly used by foreign people and only some british people understand what it means, but in north london (by the greek community) it is widely used and understood by all the community.
example 1..

person 1 "man we need to leave now!"

person 2 "DUDE, im taking a lil geo, ill only be 5"

example 2..

person 1 "dude pick up your phone"

person 2 "im on the loo taking a lil geo, cant talk right now"
by samarass1 June 04, 2010
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