I put X Gon Give It To Ya on with my Mum in the car the other day, and didn't give her a heads-up at all. If she didn't find the fucking Thatcher years offensive enough she won't stop voting Tory, she can deal with a few "muthafuckas" and n-words.
The increase in fuck time is negligible - about 10%. I only noticed the extra hour due to the increased IQ allowing me to solve Fermat's Theorem AND get the Countdown maths problem faster than Rachel Riley. Side note: I would have lasted two hours longer but I started thinking about Rachel Riley.