Gigolo translated as 基哥儿龙（音）?
If it is a Hong Kong movie, it is likely in Cantonese


  基 is transliteration of 'gay'
  
  /gei1/
  
  [5] (Cantonese slang only) phonetic translation of "gay" i.e. male homosexual e.g. 搞基,


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  哥
  
  /go1/
  
  It is common to address a man with a  suffix  "哥", e.g. 晶哥 [zing1 go1*4], 叻哥 [lek1 go1*4].*
  
  remember 犀利哥?


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  牛郎
  
  /ngau4 long4 /
  
  a gigolo, a male sex worker


牛郎 is a male sex worker (serving older female mostly) 

基哥牛郎 most likely refers to 'male sex worker (specialized in serving male clients)'