Ant and Dec's Saturday Night Takeaway is just one of the many rubbish and childish shows that have been on over the years on Saturday nights. This should be on late afternoons or in the mornings with the children's' programmes because that it what is seems like.
The show usually includes Ant and Dec showing off, a prank on a celebrity which includes them dressing up which makes them look stupid and young Ant and Dec interviewing a celebrity (more showing off).
Despite all this, this show is quite popular and has even won awards. Certainly not family viewing, for younger children only.
I find this show very childish at times.