Or merci bien (Thanks a lot), to which the answers can be
randomly picked between:
- Je t'en prie/Je vous en prie (depending on the bloke thanking you)
- De rien ("It was nothing")
- Pas de problème (, mon vieux/ma vielle/ mon coco/ mon/ma chéri(e)) ("No problem - ol' pal (m/f) / sugar honey lollipop ...)
- Merci bien/Merci beaucoup (if they actually say thanks, when it was your turn - happens far too often in supermarkets)
I love nested brackets