It's probably not a good idea to kill your feet but your shoes should never feel loose.

给自己穿小鞋可能不是什么好主意，但是攀岩鞋一定不能松。

youdao

The front row always like to kill a bit of time afterwards with a rather amusing goal kicking display but thankfully it has never been reproduced in a game.

BBC: Clive Stuart-Smith column