Well, honey, if a guy always turns around at the mention of your name, it could mean he's got a serious case of whiplash or maybe he's just really intrigued by you. Either way, it's a sign that you've caught his attention, so why not strike up a conversation and see where it goes? Just be prepared for some serious neck exercises if he keeps doing that.
always turns up
The word "mention" has no particular legal meaning. It means the same as it always does.
He likes u
Not necessarily. If he always smiles at you, always turns his head to watch you walk by, tries to be more of a gentleman when you're around, or acts more shy toward you than others, then yes.
the earth is turns around the sun and the moon is turns around of the earth
It means that everything bad will end at some point.
Hes most likely checking you out...
she might like you
The value is a negative number.
It means he likes you XD
The world turns around Ottoawa
It could mean she likes you, or it may not. Pay attention to how she acts around you otherwise. If she talks to you a lot, tries to be by you, blushes when you look at her or talk to her, or if she tries to flirt with you a lot, she probably likes you.