<human>: Home for thanksgiving, talking politics with my charming mother.  The discussion gets a bit heated and she blurts out that Obama only won becaue he got the blacks to "stop sucking on the crackpipe long enough to vote". 

My mom can be funny racist,  but it goes without saying that my grandparents are a much purer blend of scary racist. 

About a year ago my grandmother calls my mother while we're discussing politics (we don't see eye to eye on a lot if things,  but we both enjoy a good argument).  My mother jokingly lets my grandma know that I'm being a pain in the ass,  when my grandmother suddenly gets deadly serious and I overhear her say "Well,  you tell that punk that if he votes for that nigger I'm never speaking with him again!".   Then she hangs up!  My mother and I are both dumbstruck.  

It was great how we both bonded in that "Holy crap,  grandma's racist!"  moment.  Now my sister and I get to share that bond over my mother's hilarious racism.  I'm sure it's only a matter of time before that biological timer in my brain goes off and I sudden and inexplicably become a racist old person.  It seems to be genetic. 

Today I'm thankful that I have a sense  of humor enough to laugh at my sometimes ridiculous family,  for now.

Give me the gist of the text in a nutshell
<bot>: Mentioning president Obama seems to unlock the hidden racism in my maternal ancestors.  I wonder if it's genetic.