Step one: Assure baby that the bananas are, indeed, quite tasty -- just like boob juice. Make squeals, smile at baby and do a little happy dance with spoon
Step two: Upon achieving a smile, likely a direct product of the dancing spoon, ensure that the smile has produced a wide-open mouth.
Step three: Move dancing spoon of banana gush swiftly, deftly into wide-open mouth
Step four: Completely shock baby with dancing spoonful of banana in wide open mouth.
Step five: Immediately regret not being able to explain that dancing spoon full of banana gush is not, I repeat, not actually boob juice, just tasty like boob juice.
Step seven: Make with the boob juice.
[No time for a picture -- must move fast to avoid epic gagging and choking and sputtering.]