The term beans can be used as a slang word word for testicles, as they often resemble a pair of large legumes.
In mammals, the "beans" are usually located outside of the main torso. This is to aid in temperature control as core body temp is too warm for successful creation of viable sperm.
It is better for the reproductive chances of mammals for their "beans" to remain cool.
Hence, "cool beans" came to mean "good", or that all is well. Its use then grew, and it is now often used to indicate hearty approval
In mammals, the "beans" are usually located outside of the main torso. This is to aid in temperature control as core body temp is too warm for successful creation of viable sperm.
It is better for the reproductive chances of mammals for their "beans" to remain cool.
Hence, "cool beans" came to mean "good", or that all is well. Its use then grew, and it is now often used to indicate hearty approval
by LowJack79 December 28, 2020
Get the Cool beansmug. 
by 3976ty8hui August 14, 2010
Get the Cool your juice.mug. by such a goober February 23, 2024
Get the Cool it!mug. When you’re space is cool but you keep the air conditioner(s) running because you hate the fucking heat and humidity.
“Dad, it’s pretty cool in here, should I turn the AC down?”
“Fuck that. I’m spite cooling this bitch”.
“Fuck that. I’m spite cooling this bitch”.
by Glorth2 July 12, 2023
Get the Spite Coolingmug. by CoolKidzzzz1234 January 7, 2019
Get the Cool Kidmug. by Felidae_ February 28, 2022
Get the cool looking whalemug.