They tolerate it. Both would be hypocrites if they said anything, as they liked this sort of stuff at our age. My father even loved transformers himself at this age.
I got some TF stickers for my new room, and while we were getting paint mixed I showed my dad them. The guy running the machine stared at me and asked if they were for my brother, when my brother had the same thing in his hands.
XD I got a dino poster myself, but it's not in good condition. Actually, not that I think about it, I think Jackie replaced it with two white horses that reminded me of unicorns...