The act of slowing down whilst driving a vehicle, in order to see the scene of an accident. / Generally, any act of observation in a manner considered unduly overt or otherwise unseemly.

present participle of rubberneck

Someone who engages in rubbernecking, or turning and staring. / (US, obsolete) A tourist. / Someone or something with a flexible neck.

(originally US) A person who rubbernecks; someone who cranes their neck as though it were made of rubber to see something (such as a tourist attraction) or to watch an event (such as an accident); a rubberneck.

To watch by craning the neck (as though it were made of rubber), especially if the observer and observed are in motion relative to each other.

Third-person singular simple present indicative form of rubberneck

simple past tense and past participle of rubberneck

plural of rubbernecker