It was the first time for her. She'd seen it done on pornsites but had never tried it with her boyfriends and they had never asked her to do it.
But Mo didn't ask. 

When she was sucking him in his office he just grabbed the back of her head steadily and pushed himself way into her mouth and down her throat.
She was appalled and couldn't breath, instinctively trying to push him away, tears welling to her eyes and she started to gag as he forcefully fucked her throat like a pussy.
Breaking through the panic a red ball of fire flashed in her head and her pussy flushed while he fucked her mouth.