Definitions by sarcasmFTW

oh what larks 

when something hilarious happens and its so funny you have to point out the hilarity of the situation.
Dull people may use the phrase 'oh what fun', but we all know 'oh what larks' is better.

friend walks into the door,
somone kind and sympathetic: "oh what larks"

oh what larks by sarcasmFTW October 26, 2011