Take it half-hearted 

Idiom

To consider or work on something without enthusiasm or effort

Don't just toy with the idea of becoming an actor and take it half-hearted, if you really want to be an actor, work for it!

Take it half-hearted by Zami Karzai September 13, 2018

half-hearted jab 

non commited fingering of the anus.

"i was going down on my girlfriend while giving her a half-hearted jab, bit like poking a dead cat"

half-hearted jab by cumguzzlingchutneyferet May 19, 2009

Half-hearted horse

When a girl makes a sexual moan, but its delivery makes her sound liken a horse having trouble naying.

I was having sex with a girl last night, but she sounded like a half-hearted horse.

Half-hearted horse by Xreader May 18, 2015