LOL, I'm constantly hearing complaints like this from my mom! My dad doesn't really think about it - he just picks up what he thinks is more masculine and starts using it. Everytime she gets a new toothbrush at the dentist and they give her like a blue or green, she's like "erm, do you have a different colour? my husband doesn't know that these colours could possibly be mine." Haha, so when she gets home, she asks my dad "who's toothbrush is this going to be?" and he always comes up with "yours" but somehow he manages to forget.

One time my mom saw him brushing his teeth with HER toothbrush and went "wait. there's a RED one there, and there's a purple one. which one is yours?" and he said "that's pink". Ugh, men!