Cell phone punctuation can occur in many different ways. One example is when you want to get out of an awkward or undesirable conversation, you simply pull out your cell phone and start texting or doing any other miscellaneous thing. This gives the other party the clue that the conversation is over.
The mutual or mirrored behavioral traits a close friend, significant other, or family member exhibits during a menstrual cycle, or per the punctuation euphemism, "period".
"My wifeJenny is on her period and eating tons of chocolate ice cream, so I'm co-punctuating with her"
"My monthly cycle lines up with 3 of my sorority sisters, so we co-punctuate and ride out the bloodstorm together"
"My daughter and I have been co-punctuating, so we watched the Notebook seven times and cried a lot"