when a male masterbates immediatly before engaging in sexual relations, to avoid pre-maturely ejaculating during intercourse.
wow, when i havfe a psb before sex, i can last all night.
by simplesam990 December 28, 2011
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(n.) Professional Spring Breaker.

Mid twenties males who work all year as waiters or managers of small retail stores to afford a one week vacation in Cancun every Spring break. PSBs can be identified by their muscles, barbed wire tattoos, spiked haircuts, backpacks, board-shorts, and the ever-present can of Natural Ice beer in hand. PSBs are loud and like to high-five their "brahs" when they do something in front of females that most other people would consider rude or embarassing.

PSB's are subclassified as PSB cat 1 (category 1), cat 2 (category 2), and cat 3 (category 3).

Most PSBs attended Syracuse University and majored in accounting.
Man, you're a friggin' PSB!

What bro? PS-what? Yo dog, let's go scam on that ho...Hey ho!
by Futureman June 30, 2004
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Poisonous Sperm Build-up.
This is the male version of PMS. Characterized by moody outbursts and a generally disagreeable disposition. Caused when a male allows other life issues to get in the way of not properly taking care of his sexual needs.
Dick is being such an a#*hole tonight. Must be the PSB - that time of the month.
by mark77nyc March 11, 2008
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Damn! She's got some psbs on her.
His mom's still got some psb!
by EricKay March 17, 2010
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PSBS (Plausible Sounding Bull Shit) refers to a type of misinformation or false information that is designed to sound credible or believable, but is actually untrue or inaccurate. This type of information is often spread intentionally to deceive or mislead people, but can also be the result of a lack of understanding or knowledge on the part of the person providing it. PSBS is a term used to describe a wide range of information, including conspiracy theories, urban legends, and fake news. It is important to be critical and skeptical of information, and to fact-check sources before accepting them as true.
ChatGPT loves generating PSBS like the definition you read above!
by yotta_mind January 14, 2023
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