cachiporrearse

A rare reflexive verb meaning to swagger or show off aggressively, built from cachiporra (a club/cudgel) via the phrase hacerse el cachiporra — someone who postures like they're tougher or more important than they are. Colloquial and uncommon even among native speakers.

• Se cachiporreaba delante de sus amigos para impresionarlos. — He swaggered around in front of his friends to impress them.
• No te cachiporrees tanto, que no engañas a nadie. — Don't strut around so much, you're not fooling anyone.
• Le encanta cachiporrearse cuando gana una discusión. — He loves gloating and showing off when he wins an argument.

This is a rare, informal verb most native speakers would recognize but rarely use themselves — presumir or hacerse el importante are the far more common everyday ways to express the same idea.

Often confused with presumir.