1. Can be used for breaking news. Derived from the moto "Extra! Extra!" when selling newpapers with breaking stories yet a "textra" uses that same emphasis but over a text message in place of a newspaper.
2. An extra text used either while there is lag in the conversation or to keep in conversation going when it is decidedly over.
1. "ZOMG! I got a textra saying Katie and Daniel had SEX!!!"
2. It's been about 23 mintues since the last text and you're about fall asleep when this textra is sent: "So...What else is up? :/ "