I did ask him (audio)

[suprunp]

Would you be so kind to tell me whether he really said 'I did asked him' on 1:50 of this video, or, which is more likely, there is something wrong with my ears?

Thanks.

 

[5jj]

You heard correctly.

 

[suprunp]

You heard correctly.

Thank you 5jj!

Is this acceptable to say so or why would a native speaker do so if it is not?

Thanks.

 

[Grumpy]

It's not acceptable, but it is understandable, particularly when you are talking quickly. He meant to say either "I did ask him", or "I asked him", and it came out as a bit of both. That's what's called "tripping over your tongue", and I've certainly done it lots of times: more and more as I get older!