be bursting to do something
be bursting to (do something)
To feel a strong desire or impulse to do something. We were all bursting to tell you about the surprise party—it's a miracle it was still a surprise!
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
be bursting to do something(informal) want to do something so much that you can hardly stop yourself: She was just bursting to tell us the news.
I’m bursting when it is used on its own usually means ‘I really need to go to the toilet’.
Farlex Partner Idioms Dictionary © Farlex 2017