Portuguese cockdwarf
a dwarf in one's pants who's sole purpose is to induce a permanent grin on the face of the user of said dwarf by sucking his or her cock (not to be confused with irascible cockdwarfs who are prone to biting and irrational behavior resulting in a negative disposition of the user of said dwarf)
Damn, that dude's got a permanent grin on his face Either he's plotting a Machiavellian scheme or he's got a Portuguese cockdwarf in his pants!