1/6th of a yard of milk

Ewan is developing some essential (;-0) life skills judging by his ability to consume his milk at night. Glug, glug, glug and its gone. His first xmas party this year today... Lots of fun.

1 yard =approx 4 pints
1pt = approx 0.5l
6 bottles of milk = approx 1 yard of milk.