that's when we all three stood up

Used to describe when a situation has suddenly turned awkwardly confrontational, dangerous or tense. Derives from a scenario where three men are casually sitting down and exchanged words escalate to the point where they stand up, ready to fight or possibly reach for a gun.

...then she told me she was late and that's when we all three stood up. Come to find out she was just talking about how she missed the first 15 minutes of her psyche class the other day. Whew!

that's when we all three stood up by exitflagger April 25, 2008

May all yer turtles hae' three heids 

This is a traditional Scottish saying in rural Stirlingshire which means as it sounds in English 'May your turtles have 3 heads'. It is a phrase typically used by those who aim to wish a person a deep sleep. It is unclear of the origins of the phrase, especially as there are no wild turtles in Scotland and Stirlingshire has no coast, however it may have originated when Scotland was a driving force of the commonwealth.

"I'm aff tae bed now, cheery ho"
"Aright then, May all yer turles hae' three heids"
"Thanks pal, and yae tae"

May all yer turtles hae' three heids

May all yer turtles hae' three heids by Ayeknowaboutscotland July 26, 2014

all threes 

Big dicked dude with an erection. Tripod.

You got me standing on all threes, pretty girl in the short jeans. - OMI

all threes by KevStarSF July 10, 2016

Walking on All Threes 

An age old dilemma the male race has had to endure, entailing the hardship of blood flow from one organ being subdued by the needs of another. Refers to both the mental and physical effects of losing (typically male) peak mental facilities.

Can also be attributed to females in regards to her metaphorical dick, most commonly considered derogatory if used by a male unless one of these conditions apply:

-Said female is a lesbian (thus referring to her strap-on).
-Said male is in the friend zone and the girl will disregard his statement as he is a non-entity.
-Said female is, in fact, a transexual, or hermaphrodite.
-Said female is a honey badger

Layman's terms: Thinking with one's dick, or popping a boner or erection in public. Sporting a metaphorical woody.

Bob:"Ever since his girlfriend cut him off, Dave's been walking on all threes. He really isn't much for Algebra today, but he is playing a mean game of mobile horseshoes."

Dave: "I can't help but salute every hot chick that walks by! I've been walking on all threes the entire day!"

Sandy: "If I had a dick, I'd be walking on all threes for her."
Friend Zone Fred: No, I totally wouldn't, I'm only interested in you.
Sandy: Aw, how sweet, you're such a good friend.
Friend Zone Fred:(thinking to himself) Fuck.

(What Friend Zone Fred should've said) "What are you a lesbian? Kinky." "Fuck yeah, hold on, lets meet up later." "Yeah, I can be tectonic friends with her." "Reminds me, if we screwed I'd have you walking on all four's the next morning" Etc... Pretty much any option or combination thereof that'll probably get him smacked, anything but option A.

Seriously, don't be Fred.

Walking on All Threes by Harlequin's Smile December 23, 2011