2)Used as a humourous and manly insult.
2)Guy 1:"Here's the money I forgot to pay your mum last night"
Guy 2:"Shut up, lid." ¬_¬`
2. A L.I.D. patient will always deny they are of low intelligence.
3. most L.I.D. patients are very unhygenic. They spit in sinks with dishes and never wash their hands.