I'm like that, but not with jaffa cakes. Trying to think of something you could have instead! They're 2 per biscuit I think, so not awful, mind if I brought a pack of something, I don't think I could have just odd few!
Have you tried frozen grapes? They have an ice cream like texture if you suck them before you bite, like little drops of heaven and a bit crunchy too! I guess you could always do syn free/low syn orange jelly and a tiny bit of chocolate instead of a jaffa!