The act of placing an index finger on top or beside the shaft of one's penis in order to please a woman with an abnormally large vagina; typically a necessary action while fornicating with a promiscuous woman.
"Man, you're gonna go after Tina? Having sex with her must be like throwing an hot dog down a hallway."
to take one in the ass so hard, you would think they need to wear splints to stand up straight from all that bending over he has been doing from guys riding him bareback.
Also the noun means a person who loves anal.
The act of sneaking up on an unknown victim, most always from behind. Derived from Splinter Cell or "Splint-C". The act of splinting somebody is an art that requires concentration and possibly very sneaky shoes.
Dead Guy - "Ohh man he totally splinted me from behind and I didn't even know."
Alive Guy - "I'm gonna spint Jack - I just gotta find some bushes to hide in."