system
A chat on subreddit /r/me_irl
human
If you want to actually get results simply follow gym etiquette and ask how many sets they have left.

Downtime in-between sets is normal and there’s no reason you can’t browse Reddit or shoot a text off while you’re resting. 

Your little fan fic burn is just going to get you cursed at and kicked out of any decent gym for being disrespectful to others.
gpt
I take 30-60 second rests between sets, in that time I’ll pull up my phone and add a couple songs to my queue, maybe shoot off a text.
I would be so annoyed if somebody asked me how many “thumb reps” I had left. 
Do you want me to just stare at a wall between sets?