Wiktionary
do the deed
vb. 1 (context euphemistic English) To have sex. 2 (&lit to do a given deed English)
Usage examples of "do the deed".
If you are indeed true to your ideals, then it is you who should do the deed.
They are warriors enough to know that in the heat of a battle, no one can say which blow will actually do the deed.
It would never again be so easy to do the deed and withdraw alive.
I should have been permitted to do the deed on the Narcona, she wept, to herself.
And he, the Maestro, wandering among them, ready to do the deed that would change their worlds forever.