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dude

dude

hi everybody, . .

here i have problem about the use of 'dude'

can we use 'dude' to greet a girl, since from what i know 'dude' is only used to greet a boy . .

and the second condition is:

we also used to greet the boy with 'what's up bro?',
so, to greet a girl, shall we say 'what's up sis?'

guide me please_