@Pary Thank you To get that pose you just temporary give the sim the shy trait put a stranger in the room they keep doing adorable shy animations like that.It is part of the idle animation.So many traits which are like 7,000 poses if you realize each part of animations are really unique if the sim is idle.You can get an idea of cool poses in CAS by choosing a trait then watching what they do it is usually a idle animation in game.Several traits have multiple animations so try them a few times in cas.
Examples
Choosing the insane trait the sim in CAS will spin around like crazy paranoid then choke herself etc then in game just leave them standing idle with that trait they will do those things when doing nothing else.
Choosing a certain trait the sim will make lil hand monsters talking to then biting and fighting each other in a cas animation these things they will also do idle in game.Makes for great poses