Blood donation once again

I respond to the call of donating my blood and pop by with my colleague 3 days back.

He wont mind donating but had to go for a jog later and decided he will probably join me the next time.

Here is our conversation while the blood rush out of my veins.

Me: I hope this wont take long, dun mind waiting right?
JF: Well I can wait for a while.
Me: My record is about 5 mins to fill up the bag.
JF: The last time I donated, it took a damn long time.
Me: Whooo look its 3/4 full now. And its only been 3 mins
JF: Wow thats fast. Guess you are quite fit.
Me: On the hindsight, if I ever got a bad cut I probably bleed to death in minutes
JF: Ermmmmm