PMSL may refer to:
* P
MSL or pressure at mean sea level, an alternative term for
mean sea level pressure
Atmospheric pressure, also known as air pressure or barometric pressure (after the barometer), is the pressure within the atmosphere of Earth. The standard atmosphere (symbol: atm) is a unit of pressure defined as , which is equivalent to 1,013.2 ...
* ''Pissing myself laughing'', Internet slang similar to
LOL
LOL, or lol, is an initialism for laughing out loud, and a popular element of Internet slang, which can be used to indicate amusement, irony, or double meanings. It was first used almost exclusively on Usenet, but has since become widesprea ...
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