My sister used to sleep in that thing.
Then, back in real life, the GD woke me up to say goodbye, he was going to work. I told him what I was dreaming about. He whispered, "Go back to them. Go back to sleep."
Knacker = any boisterous, drunk, track-suited person with a gelled mullet (man) or scrunchied ponytail (woman) who is openly breaking the law (e.g. drinking in public, running against a traffic light, screaming at the Gardaí who pulled them kicking from the restaurant where they were causing a stir); age does not make a difference, but the majority seem to be between the age of 13 and 20; annoying, but generally harmless (just watch out for the purse-snatchers).
Scumbag = junkie stabbing. You do not want this.