Cut up and Rattle on

Cut up verb - To engage in attention-getting playful or boisterous behavior.

Rattle on and cut up are semantically related In some cases you can use "Rattle on" instead a verb "Cut up".

Rattle on verb - Talk incessantly and tiresomely.

Cut up and rattle on are semantically related in gossip topic. Sometimes you can use "Cut up" instead a verb "Rattle on", if it concerns topics such as spread rumors.