Lumberdump 

The urgent shit that comes approximately 1 hour after finishing a lumberjack slam from Dennys

OMG I barely made it home from denny's before i took a massive lumberdump

Lumberdump by TedBear1 March 23, 2011

Slumberdump 

Where one makes the fatal mistake of dropping log whilst catching some Z's

(In Bed)

Wife: Poo-ee, what's that smell?

Husband: I do believe I've slumberdumped during the night.

Slumberdump by HooHaAlPacino July 21, 2010