I can now look in the face of my colleague and not knowing the name

I met a guy last year in Frankfurt bookfair and for a ten minutes talk (rather general from my side) only knew I know him until I noticed that he is a friend and we have been to his parties quite often

Sometimes I have to replace all substantives in a phrase by "thing" (Like "Could you please put the thingie on the thing")
because I have no access to the real words.

Do you think they will have to put me to sleep soon