Besides da classic "supposedly for giving schoolchildren practice/confidence in public speaking" action (but which actually scares da crap outta many kids and/or causes lower-income students to feel jealous of da more-affluent ones who have nicer/fancier possessions to proudly display), this expression also refers to either of two "displaying da merchandise" actions:
(1) Where Person A lets Person B view one or more of Person A's intimate body-parts --- with da understanding dat said reveal is supposed to be kept confidential, of course --- but then either Person A or Person B goes and blabs about said private-area exposure to one or more other people, causing humiliation and/or repercussions to one or both "Persons", or
(2) Where Person A lets Person B view one or more of Person A's intimate body-parts in exchange for Person B's verbally revealing to Person A one or more secrets dat he would otherwise not divulge.
(1) Where Person A lets Person B view one or more of Person A's intimate body-parts --- with da understanding dat said reveal is supposed to be kept confidential, of course --- but then either Person A or Person B goes and blabs about said private-area exposure to one or more other people, causing humiliation and/or repercussions to one or both "Persons", or
(2) Where Person A lets Person B view one or more of Person A's intimate body-parts in exchange for Person B's verbally revealing to Person A one or more secrets dat he would otherwise not divulge.
One good way to get a normally-modest chick to let you see her boobs/butt is to offer to help her with her homework or some other task dat she does not possess da knowledge and/or mental/emotional capabilities to tackle on her own, but insist dat she agree to a "show and tell" contract --- i.e., a deal wherein she agrees to let you view her "goods" in exchange for your putting in da time/effort to tell her da vital bits of info dat she needs in order to complete said drudgerous task.
by QuacksO April 17, 2021

"How does this rank for you in playoff pushes, the excitement of this building and the fans' involvement over the last couple of games?"
"Yeah, I mean, it's been unbelievable. A whole lot better than Vancouver, I'll tell you that for free."
"Yeah, I mean, it's been unbelievable. A whole lot better than Vancouver, I'll tell you that for free."
by Uncle Leo Must Go Now! January 23, 2024

It means to tell someone or make to it evident that you are ahead of someone else in life or ahead in a state of thinking
Example #1
Lucas: The fact that I can buy jewelry and still pay my bills really tells the space between me and you.
Harris: Damn you right I need to start grinding.
Example #2
Martin: I might start a business just to tell the space.
Lucas: The fact that I can buy jewelry and still pay my bills really tells the space between me and you.
Harris: Damn you right I need to start grinding.
Example #2
Martin: I might start a business just to tell the space.
by Yung Dustpan March 3, 2021

<.7.9.7.6.>If I, Angel Jose RObles, Strikes Individuals, I,Angel Jose Robles, Will Tell Myself It Is Not Normal Until I Go To SLeep<.7.9.7.6.>
<.7.9.7.6.>If I, Angel Jose RObles, Strikes Individuals, I,Angel Jose Robles, Will Tell Myself It Is Not Normal Until I Go To SLeep<.7.9.7.6.>
by SuelTameOresuTeMato May 1, 2025

Hym "You said 'tell the truth' not 'create A.I. and be objectively better than everyone.' And to be fair, the telling the truth part isn't the part that is working. Literally everything except telling the truth is working. The truth telling part is the part that is not getting me the credit for the A.I."
by Hym Iam August 17, 2024

When you work with someone and they are staying late and you want them to go. But they still think there's too much to do but they have things to do elsewhere. This is what you say to them on the way of the door.
Them " there's a bunch more to do but I have to go. Can you finish up and do this... and this....?"
You " you dont have time tell me twice "
You " you dont have time tell me twice "
by Whiteswordgift December 9, 2022

Don't tell mere started from a video by Matt Carriker who is the main person in the popular YouTube channel Demolition Ranch and Off The Ranch where he bought a new gun and told viewers to not tell mere his wife Meredith Carriker
by T. Drake November 16, 2023
