piss proud
Having an erection when waking from sleep or, more generally or metaphorically, a…Having an erection when waking from sleep or, more generally or metaphorically, a false or "empty" erection.
Meaning
4 senses(UK, not comparable, vulgar)Having an erection when waking from sleep or, more generally or metaphorically, a false or "empty" erection.
(UK, broadly, not comparable, vulgar)Falsely proud, implying an outward display of success or virility belies a dubious reality.
(UK, dated, derogatory, not comparable)Denoting an old man who marries a young woman, implying the only erection he could muster would be prompted by the bladder.
(not comparable, rare)Paruretic.
Origin
From piss (“urine”) + proud. Appears in Francis Grose’s A Classical Dictionary of the VulgFrom piss (“urine”) + proud. Appears in Francis Grose’s A Classical Dictionary of the Vulgar Tongue (1796):
Wiktionary, CC BY-SA 4.0 · source
Dictionary text adapted from Wiktionary (Wiktionary contributors, CC BY-SA 4.0) and Open English WordNet / Princeton WordNet (CC BY 4.0, WordNet License); shared under CC BY-SA 4.0. Example sentences and recordings are credited where they appear.