Iman Shumpert & Teyana Talk Shaq's Man Junk

How much Shaq is too much Shaq???

When you can see all of his man junk flopping around in his undies ... so says Teyana Taylor and Iman Shumpert.

Of course, Shaq recently spoofed Teyana's insanely hot routine in Kanye's "Fade" video -- dancing around in his underwear just like Teyana.

The good news ... Teyana and Iman LOVED the dancing.

The bad news ... they hated the ultra-revealing outfit.

One thing we can all agree on ... you should probably watch the original "Fade" video again.