Bigger and firmer. / Are those 40 Double D’s? / Close, it’s 80 large.

A suburban Washington county official at the center of an FBI investigation into years of kickbacks says he is innocent and that the facts will prove it.   Jack Johnson, who served as the executive of Prince George’s County, Maryland, since 2002, spoke to reporters late Friday after the FBI released details of how he and his wife allegedly tried to hide checks and evidence of illegal payments, even going so far as to flush a $100,000 check down the toilet.  Agents then searched Leslie Johnson and found $79,600 in her underwear, the FBI affidavit says.