A
girl who dyes her hair so red that while having sex the sweat from her
forehead blends in with her hair dye, causing the sweat to become red and resemble period
blood.
Bard: Last night was crazy. My bed looks like someone was murdered on it.
Derek: Seriously?! What happened, bro?!
Bard: I was having sex with my
girlfriend.
Right before she dyed her hair red. Need I say more?
Derek: Goddamn Ruby Red
Period Heads.