rubberneck
rub-ber-neck
noun
A person who cranes their neck to stare curiously, often at an accident.
"The rubbernecks caused a huge delay."
verb
To crane one's neck to stare curiously, often at an accident or spectacle.
"Drivers slowed to rubberneck at the crash."
Thesaurus
Synonyms: excursionist, sightseer, tripper, rubbernecker