verb/ˌdaɾle a la θamˈbomba/
to jerk off, spank the monkey (of males, masturbate)
“[…] me imaginaba en la playa […] en brazos de una vasca de tetas enormes. El calentón imaginario fue tan en aumento que no me quedó más remedio que salir a mi refugio secreto a darle a la zambomba” — […] I imagined being on the beach […] in the arms of a large-breasted Basque woman. This horniness I conjured up got bigger and bigger until it got to the point I had no chance but to go to my secret refuge and spank the monkey
Literally, “to play the zambomba”. The zambomba is played using similar movements to those used in male masturbation.