when you go at it so hard that your balls get hard as well. the thrusting & smashing that goes on for hours becomes so exhausting. you stand there, in & out. when you finally release your steamy, hot, cum it shoots through that pussy & that shit becomes a flapper. the moans are immaculate, echoing off the walls around you. after this type of orgasm your nuts will never be the same. & the chick you smashed will have a grandma cooch for life.
zoe: dude i smashed andrew so hard last night, he gave me a flapper! turns out at the end of that, he had a hard sack!!
theodore: mmm
theodore: mmm
by flappy_cooch_69 April 23, 2020
Get the hard sackmug. Common name for "testicular akathisia"--also commonly known as "jimmy nuts": an uncontrolable urge to persistently shift, manipulate, or joggle one's testicles.
by Even Cleaveland January 3, 2007
Get the Whack Sackmug. Now that you are sexually active let's go to the store and load up on fingercots for your sack inch so you don't contract a disease from your notoriously sexually active girlfriend.
by Sean M. Lennon March 11, 2006
Get the sack inchmug. Another word for testicles.
by Nik Gonzales May 23, 2006
Get the Apple sackmug. The act of rubbing your own hand around your sweaty ball-sack, then shaking someone else's hand with the aforementioned hand smothered in bollock sweat.
by The Sack Hander General June 29, 2011
Get the Sack Handmug. by daveboss March 15, 2010
Get the old sackmug. The act of violently moving the pelvic area in a thrusting motion inorder to clap the scrotum against the gluteal wall. It bears a strong resemblance to a clap with the hands.
by The Dude. December 9, 2008
Get the sack clapmug.