I'd check the fruit bowl...

If I were you.
And don't go eating the poison grapes.
I know.
WHAT?
But really.
Poison grapes.
Well, poison spiders = poison grapes, but still.
So I hear on the radio today that two people were just minding their own business eating a fruit salad or something of the like they bought from a store. Later, they start having headaches and stuff. They didn't die or anything, but they were taken to the hospital.
Turns out, there were poisonous spiders eating and nesting in their grapes. Evidently the couple ate a few...hence the headaches.
Yeah.
So when my sisters insisted on having strawberries not long after my hearing this, I remembered we had grapes in the refrigerator that needed to be eaten.
Riiiight.
So we proceeded to slice up every single grape. Just to, you know, make sure we didn't have any invaders.

Well that's awkward.