Sheryl Underwood

If ya wanna know what Tyson Beckford's junk looks like -- ask Sheryl Underwood … because "The Talk" host got an eyeful of his manhood in Vegas this weekend. Beckford made his Chippendales debut Friday night at the Rio -- and gave Sheryl a very up close and personal introduction to his man parts…

All comedians know when they're bombing, and when they're gonna get the hook ... and that's exactly how Sherri Shepherd felt at "The View" -- at least that's what her pal Sheryl Underwood TRIED to tell us. As TMZ first reported, Sherri and Jenny McCarthy were sent packing from the daytime talker…