Excuse me for butting in but since the subject is Rooty, not necessarily.
Considering his 'over active libido' (per judi) he could've been 'porking' a Blow-up Doll add in his (cough) morals, it could be a small Farm Animal. Neither of which would be categorized as a 'mistress'.
Ergo, "porking his mistress" would be correct.
and how do you really feel...? (g)
Merry Christmas!!
"Excuse me for butting in........ "
Hmmmmmmm.......that sounds like something Kerik might have said when he was on security detail while Mayor Rooty was busy porking Jooty.
Rooty ordered the NYPD to stand around while he was cutting the mustard with Jooty.
Kerik was Rooty's hand-picked Police Chief ---maybe Kerik got to lick the jar when Rooty was done with it.