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.
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to spend time together in the horizontal position, not particularly with sexual contact (but it is acceptable)
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a clueless clown-like bastard chronically a straight mess, usually drunk and/or does not give a fuck, always down to chill, and possessi..
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noun. The act of intentionally vomiting in someones mouth while you kiss them.
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