Help Me Remember This Joke! Please!!

[Leeds2]

I heard this joke earlier this week. Can't remember where, it wasn't particularly funny but it is driving me mad!
It was something like, "Where did we go on our first 7 dates?" The answer, I think, was dinner, dinner, dinner, dinner, dinner, dinner (to the tune of the Batman song) and then .......... Where was the seventh date? I can't remember and I need to know!

Surely there are 8 dinners in Batman? Isn't it 4:4 time? Stopping at 6 feels very odd and doesn't lend itself to a punchline.

Dunno, but that would be eight dinners if doing it to the batman theme wouldn't it?

They went for dinner 8 times and then to the Batman movie, so it was like the Batman theme song.

My girlfriend and I went on our 9th date to see the new Batman film.
Our dates can be summarized as follows: dinner, dinner, dinner, dinner, dinner, dinner, dinner, dinner Batman.

Boswell.

Yes!!

What?

"Our 1st 7 dates were to restaurants and our 8th was to see a film, it was dinner dinner dinner dinner dinner dinner dinner Batman"

Thank you! I should've been able to work it out myself, but had a real mental block. I blame the heat 😂.

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