Actually, Pelosi is not stupid (unlike Boxer, who is hopelessly "special"). This (I strongly suspect) means that Pelosi is a liar, who peddles falsehoods that have been premeditated and committeed and (again, my suspicion) assigned by the WH.
The truly cynical and vulgar part is that when she plies these lies, she believes that WE are stupid enough to believe them and that she's succeeding in deceiving us. (In that sense, she lies to herself.)
.
Some call his job that of 'siciliano protectore'.
He taught her everything she knows.