en finir

At last, perhaps? I saw it on an ad. Google translate says 'finish with the feet dry' so maybe it is more like finish (the day) with dry feet?

Composter

Composter translated by Google Translate
Automatic translation (English):ticket punch?
Original text (French):
billet a composter
...avant l'accèss au train. So that'd be get ticket punched before you get on the train?

And you'd say it like

poubelle

rubbish?

update: in fact recipient for rubbish (trashcan, rubbish/dust bin) and a family name?

risquer de

This is a bit literal but something like 'risk of getting', see tu risques de te faire pincer trés fort

And for more see http://www.wordreference.com/fren/risqu%C3%A9

pincer

something like pinch?
I like the construction 'tu risques de te faire'. And notice 'sur la porte' , wonder whether this is about putting your hand on the door or whether on, in, over are conceptualised differently in French?