Tution Teacher Fucks Me Hard While I Ask Biology Questions on Third Day

It's the third day of tution. I'm bent over my desk asking biology questions. My tution teacher comes up behind me and starts rubbing my ass. She whispers in my ear to keep asking my questions. She lifts my skirt and slides my panties down. She starts fingering my wet pussy. I moan as she slides her fingers in and out. She then pulls out her strap-on and starts fucking me hard. I grip the desk as she pounds my ass. She tells me to keep asking my questions. I moan and ask more questions as she fucks me harder and harder.