Ooh, your assurances have me quaking in my shoes! You've just weakened your case, you realise? Only the inadequate ones make SUCH a commotion insisting it's not so! The louder and more vehement your denial, the more you need to make up for!

[Moriarty shrugged, smiling in a mockingly apologetic sort of way.]

It makes perfect sense now that you can't keep a girlfriend. Not even a desperate woman would put up with someone THAT unsatisfying in bed. Oh, this little visit has been so informative I'm so glad I dropped in!