英語ノート
EigoNoto.com

Hand Sandwich is a fun way for students to reward winners and punish losers after a game. Winning students first put one hand palm-down on the desktop. The losing student/students then each put on hand on top of the winners lower-most hand. Finally, the winner puts his/her other hand on top of the ‘sandwich’.
To play, the winner must pull out the lowest hand and attempt to slap the other students’ layered hands (without slapping his own upper-most hand).