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1.
the process of rolling one's scrotum between one's forefingers to relieve and get rid of an annoying itch.
''Terry scarped his balls after Nick put itchy powder in his pants''
by NickThePrick91 November 12, 2011
 
2.
a quicker way of saying "it's a carp", allowing it to be said more and much quicker, usually used at the river.
"scarp scarp scarp scarp get the net get the net"
by frank May 06, 2004