What is Lan Si?
1.
1. dick cheese (the layer of filth under the fore skin of a penis. the words 'lan' and 'si' means penis and shit respectively.)
2. to describe a snobbish person, a show off.
1.)you haven't cleaned under your fore skin, there's a lot of lan si and it stinks.
2.)that person damn lan si.
See
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a man that is gay....likes the d...
Man, look at that sweet booty dude over thuur, makin out with that other guy...
1.
When a man takes his thumb and inserts it into the female vagina, then soon after pulls it out and puts it in his mouth.
Also see lick ..
