Nut-cutting time phrase
A defining moment; a critical period when decisive action is needed; a limited period when one must exert himself/herself.
For a student like me, May is nut-cutting time because it’s when we have our final exams.
Guys, it's now nut-cutting time. Please, focus on your work and make an all-out effort.
John seems to always win the game in nut-cutting time. He is such an elite quarterback!
The phrase refers to having to cut a nut off or away from a bolt because rust has immobilized it to the point where there's no other way to remove it.