I watched Seinfeld yesterday and I couldn't understand one of the responses of Jerry (A punch line). He says:
"I know that going in."
Who is going in where? Why the present simple?
Here is the full portion so you will get the context (The sentence is at the end of it):
KRAMER: Jerry. This is great cantaloupe.
JERRY: Alright.. (tastes it)
KRAMER: Ah, huh. It's good?
JERRY: It's very good.
KRAMER: Good, huh?
KRAMER: I got it at Joe's.
KRAMER: Forty-nine cents a pound. That's practically half than what you're paying at the supermarket. I don't know why you don't go to Joe's.
JERRY: It's too far.
KRAMER: It's three blocks further. You can use my shopping cart..
JERRY: I'm not pulling a shopping cart. What am I suppose to wear? A kerchief? Put stockings on and roll 'em down below my knee?
KRAMER: See, the other thing is, if you don't like anything, he takes it right back.
JERRY: I don't return fruit. Fruit is a gamble. I know that going in.