Akademik

Держи карман шире!
Do not hope that you will get it from me or from someone else. See Когда рак свистнет и рыба запоет (K)
Cf: Coming, and so is Christmas (Br.). Don't hold your breath (Am.). If he sky falls, we shall catch larks (Am., Br.). If you cut down the woods, you'll catch the wolf (Br.). I've got a bit of string with a hole in it (Am., Br.). Lots of luck, Charlie! (Am.). When it rains pottage you must hold up your dish (Br.)

Русско-английский словарь пословиц и поговорок. . 2013.