Shirty

Gobby had to confess to a unprecedented fit of puerility when, as Billy Idle piqued her during a particularly uncooperative effort to add to the weekly shopping list, she saw fit to take use the chalk held in her hand and express her true feelings on the back of the T-shirt he was wearing.

Considerably later, after the (chalk) dust had settled and they retired harmoniously for the evening, Gobby did check to make sure Billy had placed the article in question in the wash basket so she could make amends. 

She was more than slightly surprised when the answer came back as 'no' and to find the garment had been placed on Billy's (on occasions precariously high and regularly somewhat foetid)  'rewear' pile.

So much so that she had to probe,

"And on just which future occasion do you think your C**T shirt will be suitable?"