underlie

       underlie (v.) – to form the foundation of  

for your edification:  This one’s so easy.  Look at “underlie.”  It’s made up of “under” and “lie.”  Obviously.  If something is lying under something else, it is forming the foundation of that something else.  If someone is lying under someone else, well, those someones might possibly be skanky sloots.  (I said “possibly”!  I didn’t say every person lying under someone else while obviously possessing a looser set of morals than their more virtuous counterparts is a skanky sloot.  But, most are, am I right?) 

examplification -  Mitzi:  The underlying idea behind the Celibacy Club’s Modesty Initiative is that we want to prevent our peers from becoming promiscuous skankers.

Muffy:  Um, weren’t you behind the bleachers lying under Rod Johnson during the pep rally last week?

Mitzi:  Rod said in order to form the foundation of our club's central ideas, we needed to research our more promiscuous adversaries to fully understand what we are up against.

Muffy:  Well, everyone saw you all up against him.