y do people pick a champ that can go more then one lane and not say a thing

or - top - jung or - mid - adc - good support - dumbass support who doesn't know what the fuck they're doing

Their summoners may give it away... but even ignoring that, they just flat out might not realize that the champion they're playing can go in to a different role.

I mean, Varus was only an ADC and never a mid laner until he was pulled out mid in the LCS. It wouldn't surprise me if a Varus main who never followed the LCS would pick him with flash+heal and expect everyone to know he's going ADC...

In general, you should talk. People making their picks then leaving for the bathroom is frankly poor decision making. I don't understand why you can't go to the bathroom THEN queue up for a game... Also, if you must leave while waiting for picks to be made, why not just say something to be perfectly clear...