What are some nightmares you guys have had?

Last night I had a dream that my dad was walking in my living room and all the sudden he dropped to the ground screaming. He was saying his chest and stomach were hurting really bad. He was crying and yelling "This pain! I can't take it anymore!" and continued to moan in agony. He died as I was calling an ambulance. The 911 operator was really slow and wasn't grasping the seriousness of the situation.

It was pretty damn scary.