What is he doing?
He is grinning.
What is he doing?
He is spitting.
When you open your mouth wide because you are bored or tired you....
yawn
When you have drunk too much fizzy drink you...
burp
When you eat noodles in Japan and want to show how much you like them you...
slurp
When you stand on a platform and say goodbye to a dear friend who is already on th train you...
blow a kiss