With the rise of Google Wave, the complete free form of communication has allowed people to insert words into other user's posts or to simply prevent them from typing anything coherent. Typically used in a humorous fashion.
Intended phrase: Just the other day, I was going to my grandmother's house.
Me (and User2): Just the other day, I was going to my grandPENNISSS 8==D~~~mother's house.
User3: "Me" you just got wave jacked.