As anyone who read my "Ashley's Desperation" would know, I hinted at a previous situation Leon was witness to before.
Basically Claire has an accident in her pants, and Leon has front row seats to it.
Claire finds herself trapped in the Battle Game mode of Code Veronica...In her alternate costume. Claire finds the outfit impratical (cause let's face it...Tank top, hotpants, and go-go boots in the cold?) but does like the equipment she has in tow.
Course, her bladder and bowels don't exactly agree with the mixed herb she had in her possession and to her dismay it's coming out one way or another.
Poor Claire would soon wish Umbrella gave her another pair of their hotpants, cause at the end of things, she'll mess the only pair she's wearing. :)