Stumble aporn 

When using stumble apon to find pornographic material

"Ugh, my favourite porn site crashed...guess it's time to stumble aporn

Stumble aporn by HellInAHandGrenade June 28, 2010

stumbleuporn 

To stumble solitarily on the pornography section of stumbleupon. Ideal for maximizing your pornographic potential on the interwebz

Last week I returned home to find my grandmother stumbleuporning on my computer and was quite shocked that she asked me how to make her own account

stumbleuporn by OG StumbleUPorner November 18, 2010