In a word, it's eating pussy, by a male or female partner. Seeing as how most chicks these days trim the hedge, it's much more likely to be nappy than bushy downtown. Hence, you lap (lick) the nap.
by mistahtwist March 10, 2011
When a girl performs such great oral sex on a guy, that it relaxes the guy so much he takes a nap, while her head is still in his lap.
by mryan007 October 20, 2011
by bob beeflips September 28, 2010