*jus now at hong kong cafe*
random waiter: 歡迎光臨(welcome) (in the taiwan tone)
then jacky, tyron etc all break into chorus of 歡迎光臨-ing in taiwan tone
ken: 歡迎光臨~ 按你媽媽的鈴~ (welcome, press your mother's bell)
aiya it's not funny in english. But anyway it was damn funny cause ken too unexpected already that reply lol!!