stop fiddling with your pen!
1act one's age — verb To be mature and not childish. Act your age and stop fiddling with that pen you’re showing us up. Syn: behave ones age …
2fiddle — [[t]fɪ̱d(ə)l[/t]] fiddles, fiddling, fiddled 1) VERB If you fiddle with an object, you keep moving it or touching it with your fingers. [V with n] Harriet fiddled with a pen on the desk. 2) VERB If you fiddle with something, you change it in… …
