Oh, là là ! Chéri!Posted: June 28, 2016
The French phrase oh là là isn’t so much an expression as an interjection. It can indicate surprise, disappointment, commiseration, distress, annoyance… any moderately strong reaction to something that was just said or done. Note that there is no connotation of sexiness or impropriety in French.*
It can be strengthened with added là‘s, always in pairs.
(*This expression is often used in English to talk about something risqué. It tends to be misspelled and mispronounced “ooh la la,” usually said slowly and with the first word comically elongated.)
~about.com education french language