The train is packed! Where do I put myself?
stra-PIE-no — stress on second syllable. The prefix stra- intensifies: strapieno = extremely full.
Use this in an informal, exasperated way to a fellow passenger when you board a regional train that is completely overcrowded.
Strapieno is a superlative intensifier — stra- + pieno (full) = overflowing full. Dove mi metto (where do I put myself) — mettersi (to put oneself, to position oneself). The informal rhetorical question expresses frustration rather than expecting a literal answer.
Non c'è nemmeno un posto in piedi.
There is not even a standing place.
In piedi (standing) — extreme overcrowding where even standing room is gone
Questo treno è in ritardo e ora è pieno zeppo.
This train is late and now it's crammed full.
Pieno zeppo — another intensified version of full, very colloquial
Aspetto il prossimo treno.
I'll wait for the next train.
The practical decision when a train is too crowded to board comfortably
Friday evening regional trains out of Rome and Milan are famously overcrowded as workers and students head home for the weekend — experienced Italians book early or travel at off-peak times.