The rather questionable arousal experienced when ingesting the finest of Indian cuisine (most commonly felt with bhuna).
'Did you enjoy your curry?'
'Fuck yeah, I got a bhuna boner!'
'Man this curry is just so ahhhhhhhh' *erect*
When you get a boner over an Indian girl,
or
When your cock stinks of curry after fucking an Indian girl.
"Man I fucked this bird last night, I got a Bhuna Boner"
"Ngl im getting a Bhuna Boner over that girl"