To have diarrhea so painful, either through burning, squirting, or plastering your porcelain throne with feces. During this process, the pain drives you to thoughts of suicide or wishing you were dead, hence suicide.
Joe: Where's Ted?

Tim: He is cowering in bed after the suicide diarrhea of a lifetime.
by Wolffe620 October 2, 2011
Get the Suicide Diarrhea mug.