This is completely a regional thing, in Louisiana this claim is actually correct and well-documented. Because of a string of serial rapes at Tulane University in 1963 legislation was passed to punish the utterance of the phrase with a fine of up to $3500 and a year in jail. Similar legislation exists in other states prohibiting the phrases "bomp bah bomp bah bomp", "rama lama ding dong", "bop shoo bop shoo bop", and "dip da dip da dip".

I love you.

Well with the history of hoodoo and voodoo in certain areas in the south, there may e some claims. However, I've heard the best way to get such a reaction may be to find a woman, Madame Ruth. She is a gypsy with a history of dealings in love. She has love potions, but #9 seems to be the most affective. Do take caution as it may overpower your common sense, and be prepared as its not the most pleasant taste.