The character cow (niú) in Chinese is used as a slang word for "You're the man!" or "You're great!"
If you add an X at the end of it, it means you have a deluded sense of self-confidence and no one appreciates it.
Wow, you're cow!
Thanks man, 'preciate it.
A weird shaped horse that produces colored flavorful water out of these bags under it's stomach. Humans often squeee the bag and drink the liquid.
I just got some flavored water from that cow. It was delicious.
this annoying thing that steps on my every morning
Person1: it has hay
person2: cow