It is mean to call a friend names.
Thomas is upset that his friend has been ignoring his texts lately.
Thomas wants to call his friend out on it.
Thomas calls up his buddy, and asks him if there's a problem between them.
Thomas texts him and insults him a bunch asking what's up.
Thomas's friend just explains he's been down lately, but they're still buddies.
Thomas's friend is offended, and never even bothers to respond.