Jug or Chug

Last night K and I were sitting in my bed watching  TV when he said:

K : Look Mom! I can Jug!
Me: ( Look over at K drinking his orange juice quickly) You can Jug?
K: Yeah, Jug,Jug, Jug.....
Me: Lol,  Do you mean Chug chug chug....like you are drinking a lot of fluid fast?
K: Yeah Mom, watch me jug ( as he drinks his juice quickly again).
Me: Try saying chug.
K: CHUGGGG
Me: There you go.

The next day:
K : Look Mom, watch me jug!
Me: Lol, it's chug! Watch me CHUG!
K: No Mom, watch me JUG!
Me: Lol