“You’ll think of something, sweetheart—you usually do.”

I dropped a stitch on my knitting, rehooked it, checked the wall clock and then said, “Mum texted me earlier.”

“Has she got the hang of it yet?”

“She said, ‘L&Ks4DnRNXT-SNDY??’”

“Hmm,” said Landen, “one of the most coherent yet. That’s probably code for ‘I’ve forgotten how to text.’ Why does she even bother to try to use new technology at her age?”

“You know what she’s like. I’ll nip over and see what she wants on my way to work.”

“Don’t forget about Friday and the ChronoGuard ‘If You’ve Got Time for Us, We’ve Got Time for You’ careers presentation this evening.”

“How could I forget?” I replied, having tried to cajole Friday into this for weeks.

“He’s behind with his homework,” added Landen, “and since you’re at least six times more scary than I am, would you do phase one of the teenager-waking procedure? Sometimes I think he’s actually glued to the bed.”

“Considering his current level of personal hygiene,” I mused, “you’re probably right.”

“If he doesn’t get up,” added Landen with a smile, “you could always threaten him with a bar of soap and some shampoo.”

“And traumatize the poor lad? Shame on you, Mr. Parke-Laine.”

Landen laughed, and I went up to Friday’s room.

I knocked on his door, received no reply and opened it to a fetid smell of old socks and unwashed adolescence. Carefully bottled and distilled, it would do sterling work as a shark repellent, but I didn’t say so. Teenage sons react badly to sarcasm. The room was liberally covered with posters of Jimi Hendrix, Che Guevara and Wayne Skunk, lead guitar and vocals of Strontium Goat. The floor was covered with discarded clothes, deadline-expired schoolwork and side plates with hardened toast crusts on them. I think the room had once been carpeted, but I couldn’t be sure anymore.

“Hiya, Friday,” I said to an inert object wrapped up in a duvet. I sat on the bed and prodded a small patch of skin I could see.

“Grunt,” came a voice from somewhere deep within the bed-clothes.

“Your father tells me that you’re behind with your homework.”

“Grunt.”

“Well, yes, you might be suspended for two weeks, but you still need to do your coursework.”

“Grunt.”

“The time? It’s nine right now, and I need you to be sitting up with your eyes open before I leave the room.”

There was another grunt and a fart. I sighed, prodded him again, and eventually something with unwashed dark hair sat up and stared at me beneath heavy lids.

“Grunt,” it said. “Grunt-grunt.”

I thought of making some sarcastic remark about how it helps to open your mouth when talking but didn’t, as I desperately needed his compliance, and although I couldn’t actually speak teenage Mumblegrunt, I could certainly understand it.