Pleasure of Trickery

A trick, a prank,
Or maybe two!
A scare, a fear,
And for two!
A scream, a yell,
It's as two!
A dip, a zip,
Those are two!
A toe, a tongue,
They continue two!
A hair, a skin,
I need two!
A man, a woman,
Equal are two!
A laugh, a cry,
Pleasure are two!
A monster, a creature,
Are needed two!