First saw this in a movie with Burt Reynolds called Semi-Tough. He had to sit thru some 9 hour seminar without even a bathroom break.
The Stadium Pal is a male catheter, a surgical tube, a t-valve and a plastic bag you tie to your leg. I'll leave the exact setup to your imagination.
That used to be called the “Motorman’s Friend”. Back in the day when cities had streetcars and work rules didn’t provide for breaks, the motorman on a streetcar was stuck in his seat for his entire shift.
The ‘motorman’s friend’ was hidden in a pants leg and all was well.