a puro huevo
Spanish
Etymology
Literally, "at pure ball [testicle]"
Adverb
- (idiomatic) balls to the wall (with great effort)
Further reading
- “a puro huevo”, in Diccionario de la lengua española [Dictionary of the Spanish Language] (in Spanish), online version 23.8, Royal Spanish Academy [Spanish: Real Academia Española], 10 December 2024