I once did a marathon at the model table.
The woman was taking a 5 day trip to New York with her family who I can only tolerate in small doses. Before she left I hit the hobby shop. I picked up all the paint I would need, some putty, and for the hell of it an F-8 Crusader in 1/72. Which I didn't plan on building that soon, but I did anyway.
I dropped her at the airport and it begins. The time I told her I couldn't get off to go with her, I actually had off. For 5 days straight I didn't really move. I ordered pizza, I tore through movies on netflix like nobodies business and I built day and night, 16-18 hours at a stretch. I slept on the couch, and I only took breaks when I needed to wait on dry time. People thought I was legitimately sick or something. The neighbors didn't even see me outside except to pull the car in and out of the paint shop/garage.
At the end I had completed:
Hasegawa P-3C in 1/72
Hasegawa KA-3D 1/72
Hasegawa F-8 (which is displayed about to refuel from the KA-3D)
Tamiya F-15C 1/48 (converted to an A) with the Two Mikes ASAT missile and appropriate decals.
Revell F-4D 1/48 with custom markings.
At the end I was mostly pissed I wasted some good drinking time. But when I have the free time with nobody bugging me I just gotta build.