人 =吃饭 + 睡觉 +上班 +玩
猪 =吃饭 + 睡觉
代入 :人 =猪 +上班 +玩
即 :人 -玩 =猪 +上班  
结论 :不懂玩的人 = 会上班的猪

Human = eat + sleep + work + enjoy
Pigs = eat + sleep
Hence, Human = Pigs + work + enjoy
if, Human – enjoy = Pigs + work
In other words, Human that don't know enjoy = pigs that work

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男人 =吃饭 + 睡觉 +挣钱                
猪 =吃饭 + 睡觉                            
男人 =猪 +挣钱                                
猪 =男人 -挣钱                                
所以男人不挣钱等于猪                      

Men = eat + sleep + earn money
Pigs = eat + sleep
Hence, Men = Pigs + earn money
if Men – earn money = Pigs
in other words, Men that don't arn money = Pigs

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女人 =吃饭 + 睡觉 +花钱。            
猪 = 吃饭 + 睡觉。                            
代入上式得：                                      
女人= 猪+ 花钱。移项得：                
女人- 花钱= 猪。                                
结论：女人不花钱的都是猪      

Women = eat + sleep + spend
Pigs = eat + sleep
Hence, Women = Pigs + spend
if, Women – spend = Pigs
In other words, Women that don't spend = Pigs

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综上：                                            
男人为了让女人不变成猪而挣钱！
女人为了让男人不变成猪而花钱！

Summary:
Men earn money not to let women become pigs!
Women spend not to let men become pigs!


男人 + 女人 =两头猪                        
祝天下的猪们快乐 ^_^                    

Men + Women = 2 Pigs
Wish all the pigs happy forever.