someone you fails as bad a as the sham-wow guy, and doing something completely stupid. usually referring to females
she sham-failed when she tried to talk to a random Hispanic person for 5 mins then realized he didn't know Spanish at all.
by cemetery (seminary) sucks October 19, 2010
A Shamwow Fake
I went to the As Seen on TV store and I bought a Shamfail.
by Daily Dues August 02, 2009