Scenario: Large metric Century ride (over 2K riders). Cruising along at about 20mph (had a bit of a tailwind, or less headwind, or whatever) and in my mirror I noticed a large group.
Man! I thought we got away from that rest stop clean! I sure don't remember seeing a group like that.
They approach like a large freight train.
Someone at the head of this mass calls out "Large group" and they begin to pass at a decent pace, a couple of miles per hour faster than me and my riding partner.
I don't mind getting passed, but what happened next really pissed me off: they "amoeba-ed" around me and absorbed me into the group.
Folks would pass me a couple or three feet to my left, then drop into the group mere inches off my front wheel. As the bulk of the group (totaled about 50-60 riders) got to where I was, they were 3-5 abreast, brakes squealing, yelling "Slowing" "Left" and so forth, and here I am in the middle of this ambulance-ride-about-to-happen cluster thingy.
Guys (and gals), just ride past! Don't try to pick me up because I don't know you and have no desire to ride in your group. Scared the crap out of me when folks started grabbing handfulls of brakes....and I had only the ditch as an alternative. You don't want to ride into an Oregon farm country ditch if you can avoid it. You need a ladder to get out.
Glad the P******* V*** folks had a nice ride. Jerks.
Rant over and out.