My old B.A. always told us...If you take lunch then have to use the rest room, do at least one stop after lunch in order for the bathroom time not to count as lunch/break. This is how the courts have also ruled in these cases.
Why would the OP think it is Ok to spend 20 minutes on a personal phone call while being paid, especially right after being clocked out? And he says he did it more than once? And now doesn't want to be judged?
I didn't know the rules???
Oh, I didn't know the rules, so I went to a movie on the clock.
Oh, I didn't know the rules, so I didn't enter my 40 minute unpaid lunch.
Really???
REALLY!!!!