I come from your body, or from your brain
Use me a little to mask all your pain
Use me a lot, the world thinks you're insane
But I'm contagious, so don't break the chain
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laughter
I come from your body, or from your brain
Laughing is a physical action - you can force a laugh, or it can come from your brain if you think something is funny
Use me a little to mask all your pain
Uneasy laughter hides what you think or can distract you from your current (perhaps painful) situation
Use me a lot, the world thinks your insane
The Joker (from Batman) laughs a lot and a lot of villains have like signature laughs. In a friend circle, the one who laughs a lot over everything can be seen as odd or weird. A lot of tv shows/movies portray insane people as laughing at whatever thoughts are inside their heads.
But I'm contagious, so don't break the chain
Laughing can be contagious and sometimes people can think someone's laugh is funny and start laughing
Its
Laughing/Smiling
I come from your body, or from your brain
Your brain controls your facial expressions
Use me a little to mask all your pain
Smiling or laughing an injury off
Use me a lot, the world thinks your insane
Maniacal laughing or crazy smiling
But I'm contagious, so don't break the chain
Laughing and smiling is contagious