Just thought we needed a new "fun" thing...

They can be either direct as in:
"Now me and my mate were back at the shack
We had Spike Jones on the box
She said, "I can't take the way he sings
But I love to hear him talk"
from The Band - Up On Cripple Creek

or indirect as in:
"the four kings of EMI
are sitting stately on the floor"
the "four kings of EMI being the Beatles,
from The Monkees - Randy Scouse Git [[AKA Alternate Title)