We just don't do commencement like we used to

We know that there's still a week of finals, but since the year is almost over, we thought we'd share a silent video of Princeton commencement ca. 1928. Some of it you'll recognize -- like the hand motions to Old Nassau or the P-rade. But apparently there are some traditions we've lost in the past 80 years -- like riding around on people dressed as horses? That part starts around 3:50 but there are plenty of other quirky traditions throughout the clip.What other traditions have we lost?

• A flour fight at Whig Hall (0:39)
• The smashing of pipes at Cannon Green (0:59)
• A cowboy with a lasso (3:42)

Just to name a few...