Top definition
The remorse one feels upon soiling another's linens with bodily excretions.
The night was going pretty well, until Anthony angered Melanie by ejaculating on her new Egyptian cotton sheets. Now he is feeling stain-pain.

NOTE: Not to be confused with Staind-pain, the extreme inner turmoil one experiences while listening to Break the Cycle.
by blowfishcrabs January 23, 2018
Get the mug
Get a stain-pain mug for your buddy Riley.