My attention span depends upon the TOPIC at the time ... Like if it is a movie I find interesting , there is no problem; BUT if I find it boring ...I'll probably fall asleep or just turn it off ....
I, for one , do NOT like football . We went to a football game several years ago ... I sat about fifteen feet from the guy who bangs the big ole drum etc ... and yet; I fell asleep ....
That's really true for me as well. Of course, I guess you could define "BS" as anything in which I'm not interested. :) I'm not a sports fan either and when I got dragged to my niece's soccer game, I dozed off.