Scintillating Lox Incident

In the Caro biography, LBJ tries to do "a new, hip-swiveling dance called the twist" with "the scintillating Helen Chavchavadze" but falls on her, "knocking her to the floor... 'He lay on her like a lox,' one of the other guests reported." On page 233 we learn that Bobby Kennedy kept a sea lion in his swimming pool "for a while." I may be focusing on the wrong parts of this book.