Alcohol gives the desire but takes away from the performance.
Originally Posted by Shakespeare
What three things does drink especially provoke?
Marry, sir, nose-painting, sleep, and urine. Lechery, sir, it provokes and unprovokes. It provokes the desire, but it takes away the performance. Therefore, much drink may be said to be an equivocator with lechery. It makes him, and it mars him; it sets him on, and it takes him off; it persuades him, and disheartens him; makes him stand to and not stand to; in conclusion, equivocates him in a sleep, and, giving him the lie, leaves him.