I have a lot of experience with clasps by undoing and doing up my partners bras over the years.

But let's be fair, that fat cunt wouldn't have had that type of experience with clasps due to 'his' sexual preferences being for very young girls that don't wear bras, or just grabbing them by the pussy.

(Edit: bugger, bra clasps and preteens have already been mentioned. Leaving my comment up though, for posterity.)