Mistress Tess – Two types of cushion

Mistress Tess has one of the best bums in the business, tight, firm, curvy and regularly wrapped in tight, shiny, figure hugging latex. Always an absolute joy to look at, especially up close, from underneath. Trouble is, She knows exactly how to sit in order to ensure that there's no chance that you'll be able to breathe from underneath it! Now normally, when She uses a slave's face as a cushion they can hold their breath for up to a minute. But, what happens when She decides to use this slaves' flesh as a pin cushion, will it have a positive or negative effect on his effectiveness as a cushion?