take selfies all the time and post them online
.
talk loudly on their phones on public transportation
.
play noisy games on their phones
.
put their phones on the table in front of them in a restaurant, in a café, or in your house
.
send or receive messages in the movies
.
text while doing other things, e.g., talking to someone else, or walking on the street
.
tweet about everything, from what they had for breakfast to what time they went to bed
.
keep posting photos of their babies or small children
.
listen to music with headphones, but with the volume so loud that other people can hear that
.
take photos of everything they eat
.
video or photograph every single event they go to and every minute of their vacation
.
post a message on your birthday, but never get in touch during the rest of the year
.
swipe through all your other photos when you are showing them just one
.
