I Love this scene from Episode 145 - The Little Jerry -- pretty much explains the issue:
[Jerry's apartment, the same day. The phone rings.]
JERRY: Hello?
HELEN (in Florida with Morty): Jerry? Leo told us he saw your bounced check. Are you having money problems?
JERRY: I'm not having money problems.
HELEN: Enough with the comedy! You're very clever, you should look into advertising.
MORTY: He never even called Ed Roydlick. They were looking for someone!
JERRY: I'm not calling Ed Roydlick. I'm doing fine!
(George enters.)
HELEN: That's it. I'm gonna to send you fifty dollars.
JERRY: You are NOT sending me fifty dollars!
HELEN: We're sending you fifty dollars! Morty, get me an envelope.
JERRY (angrily): I swear to God, if you send me fifty dollars, you are gonna be so sorry!
MORTY: I don't see envelopes!
HELEN: They're right in front of you! Oh, for heaven's sakes... (She puts the phone down on the couch and goes to help Morty.) Show you...
JERRY: Ma! Ma! MAAA! (Hangs up the phone in disgust.) Oh, ahhhh (sighs quietly)
GEORGE: How're the folks?
JERRY: Good.