suck rubber
v. phr.— «We’ll have simulated ground bursts and smoke going off and people running around in protective suits sucking rubber, as people affectionately refer to it.» —“Robins unit set for major inspection” by Gene Rector in Robins Air Force Base Telegraph (Macon, Ga.) Nov. 30, 2005. (source: Double-Tongued Dictionary)
Further reading
What if, instead of being an inanimate object, a dictionary were alive? That’s the idea behind a lavishly illustrated new children’s book called The Dictionary Story (Bookshop|Amazon) by Oliver Jeffers and Sam Winston. This is part of a...