If the goal keeper's team has substitutions remaining, then another goal keeper may replace them. If not, then a field player must be nominated to become the new goal keeper.
It is a hand ball
Nothing requires a goalkeeper to have a maximum weight.
julio Cesar (Brazil )
Play has to stop in order to bring on a substitute, whether it be a goalkeeper or an outfielder.
To fool the goalkeeper.
gianluigi buffon casillas
No they can not do it as they can harm the goalkeeper. Henry id that recently to celebrate a goal, but he got fined heavily.
It takes a lot of effort and trainning. Join a well established soccer club and get a proper goalkeeper kits.