Useful for a sketcher having beers.

The other day I found myself on vacation in mountain with several friends who were themselves came with other friends, etc ... 
The principle was to ski until exhaustion the day and meet in the evening in a bar. 
Difficult to know who is who after a few beers, but here it is: I found the answer with this clever drawn reminder... 

Ballpoint on old papers, cheese, crisps and beer. And computer coloring.