Context: I ' m always up for a wander around a graveyard at night . Bloody good fun . But OMG , it is STEEP in Scotland ! And there were a lot of drunk people in Edinburgh ( and I ' m talking drunk at 10 am ) . My parents got pissed off annoyed because there were drunk people yelling in the street at 3 am , but I did n't notice that .

Question: What may be the reason for them not noticing the drunk people ?
Options:
0. None of the above choices .
1. They are used to drunks .
2. They were sleeping .
3. They were drunk too .
Answer: 2