I believe that the late Leo Durocher was a kindred spirit to you, Neutron. In his autobiography, "Nice Guys Finish Last," he describes how, as the manager of a baseball team, he gave advice to a young player about dating.
The young player complained that he had spent a lot of money on a dinner date the night before, and got nothing in return but a polite thank you. Durocher gave him this advice: If you pick up a woman at her place at 7pm, and you're driving towards a restaurant for dinner, then you should put your hand under her skirt and into her private parts at 7:05pm.
Two things can happen, and both are good, Durocher explained.
1) She might like it, and then you know that you're going to have a fine evening.
2) She might slap your face hard, and demand to be taken home. In that case, you're rid of her by 7:10pm, and you haven't spent a cent. You have plenty of time to go to a bar and find more congenial companionship.
Note: Durocher was the ^%%$#**& traitor who resigned from the Dodgers to manage the hated jints.
Second note: Leo Durocher didn't say how many fingers to use.