--The method of calculating on your fingers the possible number of hours you can sleep after being up later than you wanted.--

Sleep Math is usually only done when you know you have to get up early, wished you could just sleep in, and are stressing because you're afraid you might not get enough sleep.

With a normal, not exhausted brain, you could probably do this math in your head. However, since you are tired you have to go back to how you did math as a child, counting on fingers.
(Couple intended to go to bed 'early' this particular night, and instead, stayed up way late talking & watching old episodes of The Sopranos.)

After finally brushing teeth and getting ready for bed, girl notices guy using his fingers to count something, like this 30+ man is all of sudden a 5 year old--

Girl to Guy--"You must be doing Sleep Math"
by M circled and M3 April 29, 2011
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A feeling of slight fear or nervousness when put in front of a math or word problem.
John got nervous when seeing 3 times 4 times 57.
He had some serious Math Anxiety.
by LEOGEO November 15, 2009
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When someone smokes crystal meth and then does their math homework.
When the teacher asked little Timmy how he got his homework done so fast, Timmy replied,

"I went home and did some crystal math."
by PepPep98 April 17, 2011
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Murders Math. Pun of "Cereal Killer". Moderator of GameFAQs Message boards.
OMG Math Murderer teh modd0rzed me!!!!
by KtC August 12, 2003
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when someone uses you just for your high intelligence and skills in math
Steve: Jobs "She only talks to me when she needs some help in math"
Bob Marley: "What a fakin math digger-mon Rasta fasa fuck these hoes"
by chill pinoy January 21, 2016
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Doing math from a cat’s standpoint, or with the least effort. When a creative but lazy person is always on the lookout for a shortcut or hack to solve a math problem, so that they could have more time for leisure or rest.
Street-smart people tend to use Garfield math strategies to deal with their everyday quantitative challenges, compared to their exam-smart counterparts who prefer a more conventional or routine approach.
by Fasters February 6, 2022
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Adult math questions that leverage on the activities that take place at karaoke lounges and nightclubs, which often illegally employ foreign-born hostesses to entertain both local and foreign male customers seeking some thrill they can’t get from their girlfriends and wives.
Can you solve this vice math problem? “The total number of Covid-19 cases linked to an infected KTV hostess so far is 128, who is traced to have had initial contact with two customers. Assuming that all infected patrons at the sleazy location each went on to share the virus with two other persons, what is the reproduction number R₀ for this cluster?”
by MathPlus September 7, 2021
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