pile in[verb]Synonyms: retire, bed, flop, roll in, turn in
 [TahlilGaran] English Synonym Dictionary ▲
 pile in (
also pile into something)
 phrasal verb (
see also pile)
 if people pile in, they get into a vehicle very quickly: 
 Pierre came to pick them up, and they all piled in.
 Pierre came to pick them up, and they all piled in.  [TahlilGaran] Dictionary of Contemporary English ▲