if it comes to the crunch

if/when it comes to the crunch

if you talk about what someone will do if it comes to the crunch, you mean what they will do if a situation becomes serious or they have to make an important decision If it comes to the crunch, will she play well enough to win? Don't worry. Ben will be right there with us when it comes to the crunch.
See also: come, crunch, if
Idioms browser ?
Full browser ?