What's with the zzzz?where is the A?

hahaha..today,after psycholody lessons...they sleeeeeep again....very nice meh sleep?hahahaa...then our psychology teacher told us some lame joke...swt...sth like..two pau....one is red bean..the other is man tou(plain) went to the cinema...why the red bean laugh/cry(i forgot)? because it has "filling"!(feeling!) then another..one is kaya one is red bean...why kaya laugh instead of crying?because they have different filling!!!(lame rite?!) anywayz...here are the pictures of...ppl sleeping..swt...GOOD NIGHT ALL OF U!!!=)