Quote from Marshall in Something Borrowed
Marshall: Lily is gonna kill me! Look at me! She's not gonna want to marry me like this. Ted: That's crazy. Of course she will. Marshall: Would you marry me? Ted: No. But not because of the hair. It's because I have a rule: never marry anyone you've had a farting contest with. Marshall: Oh, great. So now you're saying Lily and I shouldn't even get married?