You're about as bright as the people who ask if vegetarians eat animal crackers and think the joke's not on them.
Of course I'm a feminist. Welcome to the 21st century. Your question isn't offensive because of it's sexism, but how excruciatingly unoriginal it is. Do you speak with an Austin Powers accent when you converse with British people, and offer black people fried chicken and watermelon? Pft. Come back when you know how to actually offend people.