make a muscle
verb1
To flex the biceps muscles in the upper arm as a show of muscular strength or development
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.
verb
To flex the biceps muscles in the upper arm as a show of muscular strength or development
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.
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