Stain testing...

He didn't mean to do what he did next when he mounted the stairs but as he sat there flicking through various porn pics his eyes were drawn back to the lacey panties...

Reaching out to pick them up he rubbed his stiff member and gently eased it from his pants. The panties fell open and he couldn't help but notice the creamy white stain again. Swallowing hard, a dull ache in his guts he raised the thin fabric to his face and breathed deep. His cock twitched, it wasn't strong but he smelt the unmistakeable scent of woman. More specifically pussy.

He stroked his cock with the panties, In the back of his mind was a simple way to see if it was cum that stained his wifes smalls. He quickly brought himself to a climax, spilling his seed into the already soiled gusset.

In the aftermath of his climax he felt embarrassed looking at the slimy mess and threw the panties aside.

He headed for the bathroom to clean himself up.