So start taking the piss out of her... playful banter like...
Then, once you've established a reputation for saying nasty / outlandish things, you can quite openly ask to put your cock in her mouth to keep her quiet, and no-one will berate you for it.
Bonus being, she might* suddenly become all lusty and agree to it.
*won't
(
Sonic James Doom forgetting the date since... umm...,
Fri 24 Apr 2009, 14:00,
archived)
That just gave me the reputation for being a grumpy rude arsehole
I must have done it wrong.
(
k3b/-\b Peace man.,
Fri 24 Apr 2009, 14:02,
archived)
Evidently...
You need to do it in a flirty, 'I'm joking' kind of way...
If you get it right then...
erm...
I don't know, it's never worked for me either.
(
Sonic James Doom forgetting the date since... umm...,
Fri 24 Apr 2009, 14:05,
archived)