It seems Miss I accidentally spilled shampoo on my hair brush this morning. Brushed my head unwittingly and set off for the office. Weather OK but got caught in a short sharp shower.
My head erupted in bubbles 
Well, if you will insist on scrubbing yer gonads with your hair brush what do you expect?
Exactly how many inquiries into the incriminating white stain on the front of your little black trousers did you get?
Have you made your "I did not have sexual relations with that hair brush" statement yet?