The rabbit is quite cute and it is meant to be a hot-water bottle replacement. That is, instead of filling a rubber water bottle with hot water and taking it to bed to keep you snuggly and warm, you can just heat up the rabbit in the microwave and it will do the job. I think the rabbit is filled with wheat grains (or something) that heat up in the microwave.
Anyway, it's quite effective - but there is something not quite right about putting Barney in the microwave.
Are you sure you want me to climb in there? Is it safe?
OK, if you say so.
I'll just make myself comfortable.