可是实际情况往往会事与愿违：
餐桌上，对方絮絮叨叨向你东家长西家短，使用餐时间延长至四十分钟。
回家半路上，她要到便利店买瓶洗面奶。这么一折腾，二十分钟后才到家。
你进入家门时已经进入高度备战状态。可是出于礼貌你也不能直奔主题，而且还不能露出马脚，只好弯下身子佯装寻找一盘浪漫的音乐CD。又耗时十分钟。
对方洗澡，卸装，涂指甲油：二十分钟。而此时的你躺在床上辗转反侧，脑海中浮现出这个笑话：
A man goes to his doctor and says. " Doc, I have a problem.
My girlfriend is sleeping over this Friday, my ex-wife is
sleeping over this Saturday and my wife is coming home
Sunday. I need 3 Viagra pills to satisfy them all."
The doctor says "You know 3 Viagra pills 3 nights in a row
is pretty dangerous for a man of your age. I will give them
to you on the condition you return to my office on Monday so
that I can check you out."
The man says "You have a deal, Doc."
Monday morning the man returns with his arm in a sling.
