I was once sent off in a match as a result of a clash of heads. Me and the opposing teams centre-back both went up for a header at a corner and i caught his head with my eye-brow which duly exploded. He went down like a sack of spuds clutching his nose like a big fairy and because his face was covered with (my) blood the ref, who didn't see the incident clearly, assumed i'd chinned the guy and was well and truly conned. Despite protestations from both teams as to the fact that it was an accident and that i was covered in blood too the ref was insistent that i was getting my marching orders. Needless to say, kicking the guy in the guts on my way off the pitch for being a big drama queen didn't go down particularly well. A 3 match ban for violent conduct ensued.
Getting the congealed blood out of my eye was a chore as well
