The act of shitting in to your hand and then smearing it on somones lips and cheek to make a smile.
Turn that frown in to a chocolate smile
by Waqas, Chris, David, May 16, 2006
Someone's ass when laying on their side with shit still in their butt crack from their last dump.
Dude, it was so gross Jon totally gave me the dirtiest chocolate smile yesterday!
by Dave of Nine Inch Newbs March 19, 2009