Substitute

Some things look pretty good but are prosthetic. . .
Often a matter of aesthetics.
Substitute a big dan for a lover guy.
Some titty foam can make 'em pout up high.
Relationships don't have to be complicated,
Especially if your lover is inflated, yeah.

Substitute a vinyl crack—
Your sweetie is a plastic sack.
Those boobs look tight, but they're kinda slack.
Make sure that root's got a spare battery pack.

She's got a plastic poon and a vinyl mouth.
Engorged when you ease in, you sure will not be heading south.
Well you could compare boobs to winkin' eyes,
But proppin' them up will increase their size.
And if genuine probin' you won't try,
Work it out with a lass to strap 'round her thighs, 'round her thighs.

Substitute steel for him.
Substitute when poking quim.
Substitute foam for your mams.
Do none of this when riding trams.