2 Talking for more than 5 minutes(max.), chatting for more than 10 minutes (I have extended it to 10 minutes maximum in exceptional circumstances, otherwise 5 minutes max.)
3 Not doing anything for more than 2 hours (or I prefer to sleep). I feel so useless when I am not doing anything.
4 Listening to 2 people talking for more than 5 minutes.
5 Pretty much everything bores me, if continued for more than 2 days.