When you stand up on the shitter before you wipe. The shit then is pressed between your ass cheeks thus giving the ink blot effect. When you wipe, it makes the same pattern on both sides of the toilet paper.
Dude, check out the pattern on the toilet paper from the ink blot effect I got when you knocked on the door!
by JTWUSMC October 16, 2010
1 more definition
A poorly applied or ugly tattoo.
She's hot, despite the inkblot.
by Dick S. October 28, 2007