Standard measurements are good, obviously, but the ones we have are still arbitrary bullshit when you get down to it.
One second is defined as the duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium-133 atom.
Why caesium? Why not hydrogen? Why not 10 billion periods? Or one billion?
Why is one metre the distance light travels in 299,792,458th of a second? Another arbitrary number which exists today due to truly random historical definitions.
You try and explain any of these to an alien civilisation and their reaction will be no different to someone in America trying to explain why a yard is three feet, or 36 inches to a child from [insert country here]. I wouldn't be surprised if eventually you ended up describing the width of a horse's arse, which would bring a whole different kettle of fish, and possible the police, into the conversation.
When we finally start ruining other planets, will we take these arbitrary measurements with us? Or will we finally work out something more universal? (Which America will still ignore.)
Paris because... well, why the fuck not? Where's the pub? :)