'Flying balls?'

Alas, the frenchies have left back to Franceland.
It's been a week of non stop franglais, misinterpretations and very tiring non-alone time.
For their last night we took them out for drinks, fifteen year old overexcited frenchies and drink does not mix, let me tell you.

Romain: 'Sam, you know where we can buy some flying balls?'
Sam: 'Err...flying balls? Like BB pellets?'
Romain: *confused face* 'Err no, like the ones filled with air'

....

Sam: 'Oh! You mean balloons?!'
Romain: 'Yeah! Where can we get some that fly?'
Sam: 'You mean float...why do you want some?'
Romain: 'To eat the air, the helium and change the voice!'
Sam: 'Err...okay...'

And he was meant to be the comprehensible one.