Ya have to eat a Frosty with a spoon if it’s really cold and stiff ... coulda broken off part of the spoon.
Best theory so far.
My rule is that I only use a straw on a Frosty. It's really a challenge when they are cold. My face muscles get a workout.
Maybe so...but it looks to me like that is the wrong end of the spoon to be eating off of. Here is a pic of a Wendy's spoon in a Frosty.
Compare it to the pic of the swallowed spoon portion. Isn't that the end of the handle? If so, that had to have been done on purpose