Somewhere in between 2:30 AM and 3:00 AM central time the idea is hatched to use a coin flip generator. From this point on we choose A as our screencaper and B as our chooser of who gets heads and who gets tails.
me (2:48:38 AM): LET ME ASK ______
A (2:48:39 AM): oh snapz
me (2:48:40 AM): WHO IS HEADS
A (2:48:43 AM): YES
me (2:48:44 AM): AND WHO IS TAILS
A (2:48:49 AM): BEFORE I REVEAL RESULTS
A (2:48:54 AM): BUT DON'T TELL ME WHO SHE SAYS
B (2:49:57 AM): SLYTHERIN IS
B (2:50:00 AM): TAILS
me (2:50:03 AM): ALRIGHT
B (2:50:03 AM): RAVENCLAW IS HEADS
me (2:50:06 AM): OKAY
me (2:49:45 AM): OMG WE'RE SEW SMART
A (2:49:55 AM): WE SO ARE
me (2:50:35 AM): K TELL ME
A (2:51:07 AM): TWO HEADS, ONE TAIL
me (2:51:12 AM): FDSAKHLADSL
And so the quidditch game is decided! Ravenclaw wins :[