Pooh Invents A New Game

Pooh was collecting fir-cones in the forest when he tripped and dropped one into the river. And that was the beginning of the game called Poohsticks.
When Eeyore is bounced into the river, luckily Pooh has a sort of idea to hoosh him out.
But did Tigger bounce Eeyore into the river, or did he just cough?