popcorn and watermelon. These are the moldy-looking watermelon flavoured ones (I threw out popcorn, too corny for my liking). I thought they looked like hamster poo. I showed the same colleague (who had offered me the jelly beans) this photo (from my phone) and told her that's my hamster's poo and she went "Real one ah?!"
That got me rolling on the floor laughing (literally!). They kind of reminded me of boogey flavoured jelly beans in Harry Potter.