owo is a word that is used by little children with very low iq. People use the word to try to be cute, like the word uwu, but just like uwu, its cringe as fuck.
Person 1: what just happened? OWO
Person 2: i dont know but whats going to happen is you getting terminated from this chat
UWU is to indicate that your eyes are closed in a "cute" way (but for people with 2iq or over, its extremely cringey
It is also very similar to the word OWO (also cringe)
Person 1: im a furry UWU
Person 2 (>2iq): wtf shut the fuck up