Yamero is a word often used in Japanese anime. Usually in a frustrating or angry manner. Such as when the villain is destroying the hero’s hometown or something similar.
Villain:I will destroy everything and everyone you love *destroys building*
One who asks questions just to try to be funny or get a rise out of someone. Also can be defined as someone who always takes random comments as they were not intended.
Joealways asks questions just to be funny. He's such a yamer