mindlink
A mindlink is when two people think the exact same at the exact same time. Possibly even finishes each others' sentences.
Mindlink: Common among bestfriends and lovers.
mindlink battle
A battle in which two people stare at each other and try to "battle with their minds." Usually they make stupid faces at each other while doing this and they look ridiculous.
Christina and Sarah had a mindlink battle in public, but they just ending up making fools out of themselves to people who didn't know what was going on.