Why, yooouuu! [She scowled back at him, but it was hard to take seriously when her face was so red and her forked tongue hanging out as she panted for breath with every thrust into her. He was really hitting her in all her weak spots - both verbally and with his dick. So unable to honestly deny his claims, she fell back on the next best thing - blatantly lying.]

I, I'm only doing this! Because you're so worked up! A, and, that thing's practically a dangerous weapon! I, nn, can't let you just walk around with it like that! So, mmmnnnnnn! I-i-it's my duty as your girlfriend to take care of it! And, ahhh! m-m-make sure you don't push anyone down but me!

[Yes, clearly that was the reason she was practically standing on tip toes, rocking her hips back against him to take him as deep as possible. Making sure her tummy was the only one being bulged by this ridiculously hard and huge cock was a matter of public safety.]