As 'Bromance' is a homosocial corruption of the word 'Romance'. 'Bronoodling' - as popularised by 'Hipster Run Off' - is a homosocial corruption of the established and largely heterosexual act of 'Canoodling'.
'Bronoodling' is an act of largely initiated by alt bros engaging in quality time together.
'Get up to anything last night?'
'Just spent some time bronoodling and listening to fuzzy buzzy indie bands. It was a Marathon, but we could Feel It All Around.'
'That reference is Washed Out. And wtf is bronoodling?'
'Get out of my life man. We can no longer bronoodle.