Snowball's chance in hell

From Fresh Dictionary

English

Noun

a snowball’s chance in hell

1. ((idiomatic{{#if:|, {{{2}}}{{#if:|, {{{3}}}{{#if:|, {{{4}}}{{#if:|, {{{5}}}{{#if:|, {{{6}}}{{#if:|, {{{7}}}{{#if:|, {{{8}}}{{#if:|, {{{9}}}}}}}}}}}}}}}}}}})), slang Little or no likelihood of occurrence or success.

   That small boat has a snowball’s chance in hell of surviving the hurricane.

Usage notes

Often, the expression is used in the negative for even more emphasis.

That small boat doesn’t have a snowball’s chance in hell.

This expression originated on the basis that a snowball would melt in hell in an infinitesimal amount of time (i.e. less than one microsecond.)