fluffing
n.— «Invented in the mid-1990s by a German bodybuilder named Chris Clark, synthol is a thick oil that is usually injected directly into the “belly” of a muscle to literally pump it up—albeit temporarily. Competitive bodybuilders originally used synthol and other products like it, known collectively as site enhancement oils, to even out minor asymmetries in muscle size and shape. But before long, some bodybuilders began injecting massive quantities of the oil into their arms in order to appear more buff—a practice known in the sport as “fluffing.”» —“Buying Massive Muscles” by Dan Childs WPVI-TV (Philadelphia, Pennsylvania) May 16, 2007. (source: Double-Tongued Dictionary)
Further reading
Susan from Virginia Beach, Virginia, shares the phrase her mother used when the kids refused to eat: It’ll grow hair on your back teeth. This supposed motivator likely blends two older traditions: a German idiom, Haare auf den Zähnen haben...
In English, we may express regret colloquially with the rhyming phrase Shoulda, woulda, coulda! German speakers also use a rhyming phrase to suggest the same idea: Hätte, hätte, Fahrradkette!, which translates literally as “If only, if only, bicycle...