David Spade -- You Can't Call Obama a D ck!

7/2/2011 6:29 AM PDTby TMZ Staff David Spade says it's cut and dry -- you CANNOT call a U.S. president a d*ck a la MSNBC analyst Mark Halperin ... so the big question ... what slang word for male genitalia CAN you call a president?Check out TMZ on TV -- click here to see your local listings!