Disneyland hangover (n.): the feeling of despondency, regret, and FOMO you experience on the day you leave the resort.
(A.k.a. Disney hangover.)
I woke up today with a huge Disneyland hangover.
Just another way to say you're having/gonna have sex.
Bumping uglies, Roasting the broomstick, Sink the sausage.
"Can't meet you till later I'll be visiting Disneyland"