A Gaza Tunnel - A smelly passage used for stuff that shouldn't be passed thr

A smelly passage used for stuff that shouldn't be passed through, and it usually ends in tears and a big mess.

'I did a Gaza Tunnel and now my pants are stained with spaghetti.'

'He did a Gaza Tunnel and his sister ran away.'

'They did a Gaza Tunnel in the kitchen and now the floor is covered in cereal.'