When utilizing StumbleUpon (With porn topics enabled), one may hit the "Stumble" button, be distracted by a friend/barking dog/TV, and glance back at screen only to greeted by extreme acts of porn unexpectedly. Thus, provoking a noise such as, "Whoa!"
(As Justin Stumbles) Toby:"HOLY SHEEP SHIT, JUSTIN!! THE LIVING ROOM'S ON FIRE!!!"

Justin: "Toby, what the hell are you yelling about?! All's well, you're just tripping man. I'm gonna get back to Stumbling...... WHOA, THERE 4 DUDES AND A GRANNY ON MY SCREEN!! STUMBLEUPON DONE GOT ME!!"
by Maddmatt4life June 17, 2011
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