By licking her pussy

Sliding Rachel's skirt to her knees again, you dropped to your knees and started to lick and suck on Rachel's pussy, and in a way that was clearly turning her on once again.

"OHGOD...I wish more guys ate pussy..." she hissed, clearly giving you a passing mark for your oral skills.

Her reaction to what you were doing to her also got you to make a mental note of things, since you are one of those guys yourself that doesn't necessarily like being the one giving head, but since it was working so well with Rachel you guess you could be convinced to change your ways.

"Am I to assume your husband doesn't Rachel?" you tease her as you go back to eating her pussy, her legs wrapped around your head as you licked away at her walls.

"FUCK...OHGOD...no he doesn't...YYEESSS...gonna cum John..." she hissed as she threw her head back and pushed her hips into your face, shooting her load out over your face as you lapped away at it and drank it down.

"Damn...well...that was hot..." she manages to get out as she pulls her panties and skirt up, getting ready to leave your office for now, "I promise you the next time I see you, you're getting your dick in this pussy."