get hot

get hot

1. Literally, to become hot in temperature. Now that the sun is out, it's really getting hot! Start running the water now—it takes a while to get hot.
2. Of a person or group, to begin experiencing a particularly successful period. Is that team really going into the playoffs on an eight-game winning streak? Boy, they got hot at the right time. Chuck's really getting hot—he just won another hand of blackjack.
3. Of a place or situation, to become busy, bustling, or chaotic. The restaurant is getting hot, and we're understaffed, so it should be a long night.
See also: get, hot
Farlex Dictionary of Idioms.

get hot

1. in. to begin to get lucky, as in gambling. I knew I was getting hot when I got all the right cards.
2. in. to become busy or hectic. Things always get hot around here toward the end of the month.
See also: get, hot
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • too hot to handle
  • hot as fire
  • (as) hot as fire
  • go like hot cakes
  • like hot cakes, go
  • hotter than a two-dollar pistol
  • hot for (something)
  • hot on
  • hot on (something)
  • hot tea
References in classic literature
The government clerk with the sausages begins to melt, but he, too, desires to express his sentiments, and as soon as ever he begins to express them, he begins to get hot and say nasty things, and again I'm obliged to trot out all my diplomatic talents.
Anna Karenina
It was beginning to get hot. This was quite noticeable.
Connecticut Yankee
Even if children mistakenly put them in a charger upside down, the batteries will not get hot, they said.
Sanyo, Tomy develop safer rechargeable batteries for toys
(Covering your food with foil or using metal pans might bounce so many microwaves away from your food that it doesn't get hot.)
Zap a snack; how microwaves get water molecules moving to heat food in a flash