To have a shit at such a high velocity, or having it break off early and having the toilet water splash up and get in your ass hole.
Fuck my shit was heavy and small so I got lots of after splash.
by oojuu March 26, 2003
When ur shit hits the water and some water splashs up and the water ends up in ur asshole.
After the huge dookie hit the water i got a big after splash.
by cartman5000 July 26, 2004
When you take a dump and water splashes up into your asshole.
Diem took a dump and felt the aftersplash.
by MR123 October 02, 2006