When we were in Wales at the IL's last week, ds2 spilled orange juice all over his trousers. I just let them dry out instead of washing them (they don't have a tumble dryer or central heating so I always take enough clothes to last us as it's such a palaver washing and drying there). Washed them when we got home and have just put them on him. They are light blue, quite fine babycord. Anyway, where the juice was spilled, it has kind of burned the pile off the fabric and they are bald 
I know orange juice is acidic but blimey - wonder what it does to your insides?!
Btw, it was pure orange juice not radioactive Sunny D - I would expect holes with Sunny D 