have a thing about

have a thing about (someone or something)

1. To have a certain preoccupation with someone or something. You better move your art supplies out of here—you know Mom has a thing about keeping the living room clean.
2. To have a yearning or desire for someone or something. Oh, Phil has a thing about birthday cake, so he'll definitely take a slice.
See also: have, thing
Farlex Dictionary of Idioms.

have a thing about someone or something

 
1. to have a special fear or dislike of someone or something. Kelly has a thing about Tim. She simply hates him. I have a thing about snakes.
2. to have a craving for someone or something. I have a thing about Maggie. I guess I'm in love. Elaine has a thing about strawberry ice cream. She can't get enough of it.
See also: have, thing
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

have a thing about

Be obsessed or preoccupied with something. For example, He has a thing about disorder in the garage, or Bob has a thing about brunettes. [Slang; first half of 1900s]
See also: have, thing
The American Heritage® Dictionary of Idioms by Christine Ammer.

have a thing about

be obsessed with or prejudiced about. informal
See also: have, thing
Farlex Partner Idioms Dictionary

have a ˈthing about somebody/something

(informal) have very strong feelings, either positive or negative, about somebody/something: I think she’s got a thing about David. She keeps looking at him. I’ve got a thing about smoking, and I don’t allow anybody to smoke in my house.
See also: have, somebody, something, thing
Farlex Partner Idioms Dictionary
See also:
  • have a thing about (someone or something)
  • have a thing about somebody/something
  • expose (someone, something, or oneself) to (someone or something)
  • expose to
  • have (someone or something) on (one's) mind
  • have on mind
  • have something on your mind
  • lost without
  • lost without (someone or something)
  • candy-coat