Be on top of the world and Whoop it up

Whoop it up and be on top of the world are semantically related. In some cases you can use "Whoop it up" instead a verb phrase "Be on top of the world".

Whoop it up verb - Celebrate noisily, often indulging in drinking; engage in uproarious festivities.

Be on top of the world and whoop it up are semantically related. Sometimes you can use "Be on top of the world" instead a verb "Whoop it up".