hail-Mary hand-in 

Your teacher has assigned several homework assignments whose due-dates are spaced out over the course of the semester. You don't bother to do any of them. The night before the final, you realize what a mistake that was, and you hurriedly do all of the homework assignments in succession. On entering the final exam, you plop the lot of them on the teacher's desk, unceremoniously and without explanation. This hail-Mary hand-in subsequently becomes an object of incredulity and amusement among your teacher's colleagues.

Can you believe that Dwayne D. pulled a hail-Mary hand-in on me at the final? He must be delusional.

hail-Mary hand-in by schlouk March 6, 2012

play the lone hand 

To play the lone hand, she or he is masturbating.

Since Jim didn't call, Heather decidedto play the lone hand.

play the lone hand by Cranberry Bob December 4, 2019

Tapatio Hot Hand 

A spicy or aggressive hand job that is normally performed by a Klingon warrior.

Also, apply hot sauce to your hand before a hand job is performed

(I'm a big fan of newbie star trek)

After a long day, Riker loves nothing more than a Tapatio hot hand

Tapatio Hot Hand by Aldosim November 18, 2021

hand weenie

A hand surgeon.

Diego's favorite part of the body is the scaphotrapeziotrapezoid ligament. What a hand weenie.

hand weenie by BoneBoneBoneBoneBone November 2, 2020

Second Hand Retardation 

When your IQ lowers due to an encounter with an individual who is low in intelligence, also can be referred to as "second hand autism".

"God I think I got second hand retardation after talking to that dumbass!"

"Dude I saw you talking to Rawny, be careful! You may get secind hand retardation after conversing with that vegetable!"

"I think I fell victim to second hand retardation I can feel my brain cells killing themselves!"

Second Hand Retardation by Tatrsos aka dank meme lord May 30, 2017

B1 Hand Symbol 

The official symbol for B1 (Black First). You just form a lowercase b with one hand, while holding up one finger with the other hand.

"The Wakanda Forever pose is out, now the B1 Hand Symbol is in".

B1 Hand Symbol by IBTAL September 28, 2019

The Holy Hand Grenade of Antioch 

A Reading from the Book of Armaments, Chapter 4, Verses 16 to 20:

Then did he raise on high the Holy Hand Grenade of Antioch, saying, "Bless this, O Lord, that with it thou mayst blow thine enemies to tiny bits, in thy mercy." And the people did rejoice and did feast upon the lambs and toads and tree-sloths and fruit-bats and orangutans and breakfast cereals ... Now did the Lord say, "First thou pullest the Holy Pin. Then thou must count to three. Three shall be the number of the counting and the number of the counting shall be three. Four shalt thou not count, neither shalt thou count two, excepting that thou then proceedeth to three. Five is right out. Once the number three, being the number of the counting, be reached, then lobbest thou the Holy Hand Grenade in the direction of thine foe, who, being naughty in my sight, shall snuff it."

King Arthur: Right. One... two... five.
Galahad: Three, sir.
King Arthur: Three.

The Holy Hand Grenade of Antioch by dip July 19, 2004