"But maybe when I get back, you'll have missed me enough that you'll be ready to talk turkey about making me a real partner, not just a cum-catcher."
"You know you're more to me than that, Dieter," Hal said, standing up from the table.

“A bloody cum-catcher!” he cursed. “You'd rather be a whore than a respectable married lady?”

“I ain't ashamed. I just don't wanna be one of your fly-by-night cum catchers.”

When he finally drifted off, I'd reach down and remove one of my dirty socks. That was my cum-catcher, […]

BABY SAN. Fuckin' A, man. I got my cum catcher. (Shows a prophylactic and exits.)

Do not try and wash the sox, it will only make the rest of the clothes smell funny, and the sox never gets clean after months of being used as a cum catcher.

Cum catcher

Meaning

Noun