To rile someone is to annoy or bother them. ... However, rile is more commonly used to mean "annoy" and roil mostly describes stirred liquid. If you rile up your sister, what you say makes gets her worked up, ready to argue with you.

Does riled up mean excited?

To cause someone or some group to become particularly excited and animated, especially in an angry or irritated manner.

Why are you getting so riled up?

Origin of All Riled Up

Someone who is riled up is has been upset or angered by someone else who is bothering him or her. However, it can also describe someone with lots of energy who is being extremely active. This usage is especially common when describing young children.