Former Illinois football star Tip Reiman had the most memorable quote of the NFL Combine so far ... telling reporters he believes birds are not what they seem!!
For those who aren't in on the joke ... the "Birds Aren't Real" movement made waves a few years ago, when a guy named Peter McIndoe created a satirical conspiracy that winged animals are actually spy drones for the U.S. Government.
A bunch of people joined in on the troll job .