(surfing slang) the inside of a tube (ie. of a wave making a tube)

listen to the pronunciation of (surfing slang) the inside of a tube (ie. of a wave making a tube)
İngilizce - İngilizce
pope's living room

2001: It was the layback, a casual declaration of civil disobedience in the pope's living room, our own aquatic limbo act. — Jason Borte, surfline.com.