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A form of high five that requires no physical contact. The two (or more) participants simply look at each other and say "Nice!" after one of them initiates the high five. The way this high five is started is that someone yells out "Hypothetical high five!" after which the participants count three Mississippis before saying "Nice." Friends who see each other often and use this form of high five frequently often develop facial cues instead of counting Mississippis before saying "Nice!" People who have trouble making eye contact with others have a hard time performing this high five and it is often impossible for them to perfect the timing.
"Hypothetical High Five!"
by JxBxD~sometimesC February 19, 2007
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Jul 12 Word of the Day
The horrible moment when you realise that you have accidentally done something very slightly wrong which has very bad (usually embarassing) implications for you. This is typically the moment of realisation that you just sent a dirty text message to a close member of family, typically your mother, rather than the intended recipient.
Message: "i'm free this afternoon so come over and fuck me senseless, my parents will be out all day"
Recipient: Mum
Message Sent
- Onosecond occurs here -
by Jimmed September 26, 2006
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The act (or, indeed, thought) of giving a person a high five without any physical contact, as the two persons are usually across the room from each other and far too lazy to get off their asses. Often occurs after a minor success or simply to display ones awesomeness. The process will many times include nodding to further affirm their collective staggering amazingness.
Person No. 1: Hypothetical high five!

(Persons 1 and 2 think about this)

Persons No. 1 & 2: Nice!
by J Bernard December 04, 2007
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similar to a wifive, but featured on the T.V. show 'How I Met Your Mother'

A high-five that takes place without any hand motion and involves looking like you are thinking.
"Ted! Hypothetical High-Five!"
Barney looks like he's thinking
by Sock7R August 27, 2007
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