Someone heard him.

Adam heard excited breaths and soft shlk-shlk-slhk sounds coming from his door, slightly ajar. Didn't he close it before? Doesn't matter, someone heard him!

Frantically, he tried covering himself up, covering his pussy with both hands. Having just cum, the contact with his swollen sex made him moan softly despite himself.

Whoever was behind the door couldn't hold themself back any longer and opened the door.