This is a term first used by Nick from Nick's strength and power in late 2020. This refers to the lighting which is used by bodybuilders and gym goers when they take selfies and trying to show off their physics. This lighting along with the camera angle often make people look more muscular and shredded and it is not a real reflection of what their body looks in real life.
A portmanteau of "tactical" and "cool". Describes equipment, clothing, or cars that evokes a military aesthetic (e.g. being all black or camo, having straps, velcro patches, tactical rails, an "angry face" or huge tires for cars, combat boots in general). Tacticool things are usually used by people who think they're the main character or would have any chance in a real fight, or are just misanthropic in general and want to feel safe from like. trans people or whatever.
Wannabe vigilantes buy tacticool cars that are extremely dangerous to pedestrians
According to online resources, a "real" IMAX screen is a screen that is totally "immersive" and fills your field of vision. A "fake" IMAX screen, or Liemax, is a screen that is branded "IMAX" the same as giant screens, but is not that much larger than regular movie screens, and does not fill your field of vision. Thus, it's just another rip-off for your bucks.
Check for real IMAX theaters and Liemax theaters on Google maps before you go out and purchase a ticket!