Adjective that characterise people that can easily dazzle other people by their amazing looks and personality. It is a very rare quality. So far, there are only two people known on the planet that possess this quality.
A take-the-money-and-run online dating agency who cancel your account whenever they feel like it, refuse to answer your e-mails and never refund your money. On-line frauds.
"Dateline have just terminated my account, despite the fact I've paid for another five months of membership yet, and the snotty fuckers won't even answer my e-mails to tell me what is going on".
"Don't worry. Dateline is for Russian immigrants trying to claim citizenship by marrying someone in this country, stuck-up bitches who think only someone with the looks of a film star is good enough for them, and predatory perverts who are only out for what they can get".
To commit an act and attempt to cover your tracks. Also: to hide something and then deny involvement even when confronted with evidence to the contrary.
Mom: The kids never play outside.
Dad: We'll dateline the Xbox. I'll get a hammer and a trash bag.
Mom: They'll never notice.
Danceline is a club at Elmira College, in Elmira NY. It is a danceclub where most of the audience believe we look better than the cheerleaders, wearing more clothes.