Loose motions

4 Guys
1 from Harvard University
1 from Oxford
1 from Texas
1 Santa from Punjab university

All are asked 1 common question:
What is the fastest thing in the world.

Harvard: Light
Oxford: Thought
Texas: Blink of eye
Santa: Its loose motions,
because last night I was lying in my bed and
before I could blink, think or turn on lights, it was over.