Celeste went to a fraternity party on saturday night and had too much to drink. although the last thing she remembers is dancing with paul, she does not recollect how she got home. celeste is most likely experiencing:

Celeste is most likely experiencing "a Blackout".

A blackout is a transitory condition that influences your memory. It's portrayed by a feeling of lost time. Blackouts happen when your body's liquor levels are high. Liquor weakens your capacity to frame new recollections while inebriated. It doesn't delete recollections shaped before intoxication. As you drink more liquor and your blood liquor level ascents, the rate and length of memory misfortune will increment. The measure of memory misfortune changes from individual to individual.