A phrase that is said during the action of slipping a finger or two between the legs of a woman. This happens during foreplay to check for moisture in order to make sure she is as aroused as her breathing/dirty talk/writhing around would have one assume.
It is preferable that eye contact between both parties is maintained during the 'Just Checking' process.
'you look so hot right now'
*slips hand between legs to find moisture*