Press/hold space to punch. FALCON PUUUUUUUUUUUUUNCH
You could kill Barney... You could eat Bob the Builder... You could burn Dora... But now... YOU CAN REPEATEDLY PUNCH THOMAS THE TRAIN UNTIL HE DIES!!! AND THEN KEEP PUNCHING HIM!!! DEEEEAAAAAATTTHHHHH!!!!!!! But maybe stop at some point, you don't want to hurt your hand