Spider and the Fly

A day of new experiences.
I've never been bitten by a spider before, that I know of, and I'm not even sure that I was today. But it seems likely.
I went out into our laundry this morning before work, and noticed a fly buzzing its little heart out because it was caught up in some fluffy spiderweb that was all over the upper area of the window. I don't know when the web had been put there, but I don't think it was longstanding.
Anyway, I grabbed the broom and swept over the window and the web, clearing it all away. Then I went outside, brushed the still buzzing fly off the web, and then carried on clearing away the web from the broom head. And something bit me!
I thought it might have been something sharp amongst the bristles but I've just had another look and it's just bristles - and none of them are sharp pointed. So I can only conclude that it was the spider, which, caught up in my sweeping of the window, was taking its wrath out on me.
My finger didn't balloon up, so obviously the bite wasn't particularly severe, but it stung for a while.

The photo was taken by momboleum. It's her bathroom window, not my laundry...