When you are not interested in hearing what the other person you are engaged in conversation with is saying, you then interrupt them with this word. Example: A. And then I went to th- B. Yappy-ho-yap-yap.
YAPPY-HO-YAP-YAP
Meaning of YAPPY-HO-YAP-YAP in English
Slang English vocab. Английский сленговый словарь. 2012