Playing with a friend on blind pick

As of a few minutes ago I was playing with a friend on blind pick because whenever we want to do draft we are never together.

So we get in and this is what happened.

Me: Bot duo with (my friend's name)

(guy I was inevitably forced to deal with will be called Jim): Adc and Supp with (his friend's name)

Me: Sorry I called bot

Jim: I see a bot call but not adc or support

Me: bot duo means adc and supp

Jim: No it doesn't so fuck off

Me: Dude, I know you're playing with a friend and I am to. I called bot first so stop

Jim: Don't dude me I called adc and support and you didn't

Me: dude... stop

(I see there are only 10 seconds left to pick so I figure I'll just dodge)

Jim: Screw you

Me: OK Bye... kys and then enjoy hell.

Can somebody tell these idiots that bot duo means you are playing with a friend, it means adc AND support, and you called it first. Don't go making fucked up excuses on why Bot duo isn't adc support. This entire thing reminded me of Friends when Rachel tried to laundry and that jerk took her machine. So fuck whoever did that and hopefully I never have to deal with them again.

Sorry... This is me venting because I'd rather not be tilting going into my next game.