A guy walks into a whorehouse and tells one of the girls he wants a blowjob.
The girl takes him to a room and proceeds suck him off without a condom.
While she does so, the guy sees a half-full bucket of sperm beside the bed.

He disregards the strange site as he enjoys the best blowjob of his life. A
second later, he shoots long lines of semen into her mouth. She takes every
drop, but instead of swallowing, she spits the cum into that damned bucket.

The guy wonders aloud, "Don't like swallowing spuzz, huh?"

She wipes her mouth and replies, "Another girl and I have a bet. Whoever
fills up a bucket first gets to drink both buckets."