Uttered by an engineer at a conference call. This is a nice congruent conflation of ” the ball’s in your court” and “the onus is on them”, both meaning under one’s control or responsibility. I suppose if the ball is not only in your court but actually ON you then you might have a heightened responsibility. Malaphors are like that sometime; they improve our established idioms. This one is similar to a previous post, “The ball’s in your hand now”. https://malaphors.com/2018/07/04/the-balls-in-your-hand-now/
A big thanks to Mike Kovacs for hearing this one and sending it in.
The ball’s on you to discover more malaphors by getting my book, “He Smokes LIke a Fish and Other Malaphors”, available on Amazon. Just click on the link here: https://www.amazon.com/dp/0692652205. Also stay tuned for my upcoming malaphor book dedicated to those mashups uttered by politicians and pundits over the past four years. It is top of the notch!