It means that it is very hard to change someones habits
You can't teach an old dog new tricks when they have been used to using a cell phone instead of a smart phone.
by Zahraa June 13, 2017
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The full title of one of the most annoying Chips Challenge levels ever, featured in CCLP3.
Crap, You Can't Teach An Old Frog New Tricks is so damn hard!
by mypseudoonym... January 20, 2012
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When you can’t get what you’re working with up to the required standard
Jeff: “That bloke just isn’t cut out for the job”
Tim: “yeah mate, you can’t teach a Duck how to fly like an Eagle
by killacrip August 12, 2021
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National Teach your sons day

National reach your sons day is celebrated on April 24th, instead of national rape day, it’s national teach your sons day
Hey it’s national teach your sons day! Time to remind my son how to respect women
by THaNoS jeevanos April 20, 2021
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Teach Me How To Stuckey

How to describe someone who can’t be stopped.
We could not stop the QB last night. He was trying to teach me how to Stuckey.
by QB1ndy September 23, 2022
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Teaching Guitar

The act of having sex with the person you are teaching.
i was Teaching Guitar to Sarah over the summer.
by Limpzad June 08, 2011
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