To get scared and not do sumthing
an example of Drop nuts. If u say your goin to get a chicks number then chicken out at the last second.
verb - To have sexual intercourse with a woman.
"Im'a drop nut wit some'a dem fly ass bitches."
"That nigga be droppin' nut like a mutha fucka."
when you 'drop your nuts' it means to shit yourself, become scared, back down or the like
'man my missus went off at me i dropped nuts hard