Highly volatile nitro fuel. The problem comes about when she gets a little too into it, and fills herself up to the brim with the nitro, turning herself into a taut bulging fuel bomb horny to ignite and explode.
Burnice? More like Bombice, on account of needing to be pumped full of extremely volatile nitro fuel then heated up until a runaway reaction occurs inside her turning her into a big bulging lewd bomb