but slambang - presumably bacon crisps are your favourite? so your ds has at least thought about what you like, and attempted a reasonable present.
I am a stepmother, and have endured years of no presents, or last-minute token efforts tha are clearly just a front because no effort has gone into it at all (I am talking about presents for dh here, not me, btw)
One year, my step children really took the piss.
dh and I were living abroad at that point, with regular (albeit short) visits back to see the children.
I arranged ot go shopping with the children, as I knew their mother would not have bothered (this followed a couple of years of absoutlely nothing form the children, not even phonecall/email on birthday/christmas/father's day etc)
they came with me, and spent the whole day browsing, and choosing presents for their mother (despite having a day lined up with other relatives for that purpose - they wanted to get her a "proper" surprise, ie one that no-one in the family knew about).
fine.
and I was happy to help them choose, pay for it etc. they were jsut children.
but it didn't occur to them at all that they should be spending the same amount of effort on choosing a present for their father.
and whenever I suggested this, or gently tried ot steer them that wya, they panicked that they hadn't yet chosen anyhting for their mum.
it was really
tbh.
and I get the ipression that this type of scenario is what the OP is on about.
these so-called typical selfish teens may well spend money and (more importantly) time on getting a present for other relatives.
my step children spend more time choosing presents for their cousins/aunts/uncles than they do their father.
it really is more about the effort and thought, than the size of present.