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EXCLUSIVE

Ice Cube Shades Mayweather vs. McGregor 'That Still Happening?'

Here's some nice, cool SHAAADE ... courtesy of Ice Cube.

As we previously reported, Cube's BIG3 basketball league is in a standoff with Mayweather, McGregor over the T-Mobile Arena for August 26.

BIG3 says it booked the venue first and won't budge (unless the price is right) -- while the boxing promoters aren't backing down either.

So, we asked Cube about the big fight when we saw him at LAX on Monday -- his response?

"Oh, that fight is uh happening?"

Cold.

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