Glossary entry (derived from question below)
English term or phrase:
flick an elastic band
French translation:
faire claquer un élastique
English term
Morocco
A Ph.D. at your service!
Native in: English (Variants: UK, US) 
, Arabic (Variant: Moroccan) , French (Variants: African, Standard-France, Moroccan)
Works in: English to Arabic, Arabic to English, French to Arabic, and 14 more.
flick an elastic band
| 3 +3 | faire claquer un élastique |
Tony M
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| 5 -1 | etendre/etirer une bande elastic |
YANNICK JOEL Atambona
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| 3 | Se donner des petits coups sur le poignet avec un ruban élastique |
Youssef Chabat
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Aug 13, 2020 10:34: Yvonne Gallagher changed "Level" from "PRO" to "Non-PRO"
Aug 19, 2020 14:45: Tony M Created KOG entry
Non-PRO (3): Tony M, Cyril Tollari, Yvonne Gallagher
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Proposed translations
faire claquer un élastique
I think the idea of 'flick' is stretching and releasing the elastic band against her skin, to make a short, sharp sensation. It's a bit like the idea of slapping oneself to bring one back to reality (though that is often used in a humorous sense).
Hence I think 'faire claquer' is the more appropriate verb here in FR.
| agree |
Christian Fournier
3 hrs
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Merci, Christian !
|
|
| agree |
Cyril Tollari
3 hrs
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Merci, Cyril !
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| agree |
Daryo
13 hrs
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Merci, Daryo !
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United States
Medical,Technical, and Legal
Native in: French (Variant: Standard-France)
Works in: English to French, French to English
etendre/etirer une bande elastic
| neutral |
Tony M
: I don't believe 'étendre' / 'étirer' is the sense here: 'flick' means to stretch it (like a 'lance-pierre') so it hits the skin and hurts a little, as kids often do to each other in play.
7 hrs
|
| disagree |
Christian Fournier
: d'accord avec Tony
10 hrs
|
Morocco
A wordsmith at your disposal
Native in: Arabic (Variant: Standard-Arabian (MSA)) 
, French (Variant: Standard-France)
Works in: French to Arabic, English to Arabic, Arabic to French, and 6 more.
Se donner des petits coups sur le poignet avec un ruban élastique
| neutral |
Tony M
: But just 'un élastique', 'ruban' is out of place here. 'rubber band' = simply 'élastique' in FR. I don't think 'faire des petits coups' really reflects the meaning of 'flick'...
6 hrs
|
Discussion
Il s'agit d'une technique visant à réduire le stress ou l'anxiété chez les enfants/ados.