Betty was embaressed when she thought her smelly fart was around her and all of her friends, but in reality the fart was many feet behind her. She had a phantom fart.
Random text characters transmitted to a cell phone contact when phone keys in a cell phone in the pocket get accidetly pressed. Similar to pocket dialing ("your pocked dialed me")
Dude, that was a weird text you sent me, or was it just a pocket fart...