well, I'm not actually allergic to chocolates, but about 95% of chocolates in boxes contain dairy, which is Very Bad for me. and I'm not actually allergic to flowers, but any flower with a scent or a lot of pollen makes me sneeze copiously. And it wouldn't have sounded as good to say "Valentine's day is a bit crap when you're lactose intolerant and have perennial rhinitis".
Truly amazing link of the day, courtesy of