I Have Random Thoughts

I went on a train the other day. The compartment was packed; not even any spare standing room. A couple of old guys sitting together weren't saying anything, just enduring the misery of being pushed and jostled, even though they had seats. Then, seemingly out of nowhere, one cried out, "Tyrone Power!" and his pal smiled triumphantly. I immediately knew why. I get these mind blanks too, when I'll be talking about something but I can't remember a key word such as a name - then it will come to me suddenly when I don't need it any more.