빨리 해.

A: Hang out here. I need to see a man about a horse.
B: 빨리 해. We’re already running late.
A: It’ll take as long as it takes. Don’t rush me.
B: If you’re not back by the time I count to 60, I’m gone.

A: 여기 잠깐만 있어봐. 나 화장실 좀 다녀오게.
B: Make it snappy. 이미 늦었다구.
A: 그래도 걸릴 만큼은 걸리지. 재촉하지 마.
B: 내가 60셀 때까지 안 오면, 나 간다.

[Additional expressions]
*Hang out here.
– Stay here. / Wait right here. / Hang around in this area. / Stop here.
*I need to see a man about a horse.
– I have to use the restroom. / I need to visit the facilities.
*Make it snappy.
– Don’t take long. / Hurry. / Make it quick. / Be quick about it.
*We’re already running late.
– Already, we’re behind schedule. / We’re late, already.
*It’ll take as long as it takes.
– I can’t tell you how long this will take. / It’ll take as long as I need.
*Don’t rush me.
– Don’t hurry me. / This can’t be rushed. / Don’t push me to hurry.
*If you’re not back by the time I count to 60
– I’ll give you to “60” and if you’re not back
*I’m gone.
– I’m leaving. / I’m out of here. / You’re on your own. / See ya.