@annette: As long as the blob is as big as an egg (as laid by a hen, not painted by Jeroen), I’ll trust your estimation.
@mike: Skittles is an outlandish phenomenon I’ve never encountered, but in order to ingest 15g of carbs, you’re allowed to gobble up 17,5 Skittles (if the BBC h2g2 amount of 42 Skittles per 40g pack is correct)
Back to something that have a universal presence: marshmallows – 2 of them contains ~12g carbs.