When your child stays up all night working on a massive lego project and in the morning he/she has symptoms similar to that of an alcohol induced hangover: Sleepy, irritated, irrational, nauseous, thirsty and hungry. Adults may experience mild to extreme symptoms when building or helping children build a Lego project that requires hours upon hours of building. This can be prevented by reading the Lego box carefully. If the Lego has a reccommended age of 16+ you are very likely to experience a Lego hangover upon completion of said project.
"What's wrong with you Henry? Why do you look like you've been hit by a bus overnight?"
"I stayed up late last night finishing up my 3000+ piece Lego Effiel Tower."
"Sounds like a classic Lego Hangover to me. get some sleep today and make sure to hydrate yourself."
Fogey/fogy /fougi/ sl. (early 18C+, orig. Scot) old-fashioned, stuck-in-the mud.
Person with old fashioned ideas which he is unwilling to change: Come to the disco and stop being such an old fogey!
You think me an old fogeyand an old tory, his thoughtful voice said. I saw three generations since O’Connel’s time. I remember the famine. Do you know that the orange lodges agitated for repeal of the union twenty years before O’Connel did or before the prelates of your communion denounced him as a demagogue? You fenians forget some things. (James Joyce, Ulysses. Penguin Books,1992. p. 38)