two (probably dumb) questions about the dean and rog show

not sure where to post this, but… heres the two questions. keep in mind i am a longtime listener to the eagle in general, and ive listened to dean and rog since i was 15. so im no stranger to them, these are just lingering questions i think a lot of people probably have

first, is the dean and rog koozie real? i feel like its some kinda secret ish running gag/a nice way of saying "hey you lost but we dont wanna ruin your day so yeah" because with everyone who calls into the thousand dollar minute losing, theye have to mass produce those koozies at this point

second, dean and rog's facebook page says theyre the only people to have a segment called "dead guy in the envelope. " however upon googling i found another- i think maybe two? other radio shows that had the exact same segment on their own radio shows. (roger and jp is the only one i remember the name of, see the link below for my screenshot.)

so yeah those are my (probably dumb, im aware) questions. but if no one has answers i kinda figured that.

the screenshot: https://www.tumblr.com/afuckingsystemsthoughts/741481865562783744/soo-who-invented-the-dead-guy-in-the-envelope?source=share