A euphemistic slang phrase meaning male sexual arousal or virility — essentially referring to an erection, though it's often used more broadly to imply energy, readiness, or sexual vitality. It's the kind of double entendre your granddad would wink at while pretending he was talking about stationery. Crude but relatively mild, and still heard in British comedy contexts.
He swore that morning cold showers put lead in one's pencil — not everyone was convinced.
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(slang) A state of erection of one's penis.
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Regional slang from around the English-speaking world — British, Australian, Irish, Caribbean, Nigerian, Filipino, AAVE, and the hyphenated-English dialects that make the internet sound local.
See all Regional & Other slang on Slangora.