There was a couple who were married for 20 years,and every time they have sex the husband would insists on switching off the lights. Well, after 20 years of time, the wife felt this was stupid. She figured she should break him out of this crazy habit. So one night, while they were in the middle of doing it, she turned on the lights. She looked down and saw her husband holding onto a DILDO. She got completely upset, and screamed: “You impotent bastard, how could you be lying to me throughout these years?! You'd better explain yourself!” The husband looked straight into her eyes and calmly, he said: “I’ll explain the Dildo if you can explain our three kids.”