The Serbian superstar grabbed the equalising goal for his team late in the second half by firing home from close-range.
Sadly for Tadic, the momentum he built up to reach the ball resulted in him going private parts first into the post.
As Champions League goals go, the Ajax man's effort has to rank as arguably the most painful-looking this century.
Check out Tadic taking 'putting your body on the line' to a new extreme here...
Video: Tadic colliding with the post after scoring v Dortmund
Ouch. If that footage doesn't make you wince, you're far stronger than us.
After the game, Tadic responded to the incident in brilliant fashion, the 32-year-old posting a very funny tweet from his official account.
Well played, Dusan.
And the Ajax man went even further when he returned to Amsterdam following the win over Dortmund, which secured Champions League knockout football for the Dutch side.
Take a look for yourself here...
Tadic's hilarious outfit
Dusan, you're an absolute legend.
As well as possessing a sense of humour, Tadic has been on fire for Ajax so far in 2021/22.
In 16 games across all competitions, the versatile forward has scored six goals and contributed 11 assists.
Ever since he swapped the south coast of England for Amsterdam, Tadic has been in sparkling form and his overall numbers for Ajax are pretty darn ridiculous.
He's played 165 games for the famous club and in that time has netted 82 goals and delivered 81 assists.
What. A. Player.News Now - Sport News