Vexting is to send a message using a "video" instead of word text. Is is similar to texting but you do not type instead you create a video message and send as your message. It is different than skype or face-time because it is a video message not real time.
Vexting is a video text message.
Noun - a bill. Used to let a person know they owe money.
Verb - to be billed for services rendered.
I keep receiving a dun in the mail.
My creditors keeping dunning me even though I have sent them a check.