My Girlfriend has a very weird habit (animal noises)?

I live in a house with three roommates and everytime me and my gf "get romantic" she starts making animal noises. Right before she reaches the big O she either meows like a cat, quacks like a duck, or moos like a cow. If she doesnt do that she screams out random phrases like "Mustaches are cool" or "grandmas old underwear" repeatedly in a very suggestive tone. The "romance" is good but I my roommates always make fun of me afterwards for days. What should I do?