Really really really
sweaty. Imagine a chubby fellow dining out at his local pastry shop - he stands, salivating, over the counter wondering which fatty treat to shove down his gullet, and then indecision strikes and he sweats over what to order. That's how
sweaty you are if you're sweating
like a fat man in a cake shop.
Incidently, if you are a fat person and want a way to avoid such problems as choosing which cake, my advice is to simply buy everything. Problem solved
Kirsty: 'How was your squash game?'
Jim: 'Great, but now I'm sweating
like a fat man in a cake shop.'