Its a texting app. Sending my mom dirty texts saying they know her and saw her on the internet. She doesn't have a Facebook and she's been married for 22 years

My mother got nasty texts from this number as well.

My mom received a text message (Do you workout? Cause you look strong enough to carry my grroccerriees.,text me)

Do not respond to unwanted texts or emails from questionable sources. Several mobile service providers will allow you to report unwanted spam texts by simply texting/forwarding it to 7726 (or “spam”) to enable the providers to prevent future unwanted texts from the specific sender.

TIP:
Put 7726 in your contact list, so you can easily forward those unwanted texts!

Source:
http://www.fcc.gov/guides/spam-unwanted-text-messages-and-email

More info:
http://en.wikipedia.org/wiki/Mobile_phone_spam
http://blog.usa.gov/post/89152807112/protect-yourself-from-text-message-spam

However, in many cases, the text origin, as seen on your phone, is faked.  The internet domain does not exist, or the phone number may have been spoofed.

I got a text message from this phone number saying they wanted to let me know we're there hands went! Like wtf?!?