uptuck
The tucking of a boner towards the top of your pants
I got a boner in class so I got the uptuck going
uptuck
where an adolescent male gets a raging boner at the wrong time and has to tuck the enlarged member in his belt and pull his shirt over it to hide it.
today in math class i got a huge boner looking at Mrs. Smith, i had to pull the uptuck.
ninja uptuck
The act of pulling ones erected penis up behind their pants button in attempt to hide it.
My teacher gave me a raging hard on while talking to me so I had to do a ninja uptuck.