The gay marriage episode (Patty) just aired a repeat Sunday.

The running gag between Carl and Lenny is that they're inseparable and every guy loves Carl and every girl loves Lenny.

When Homer calls home to report he'll be late because Lenny got into an accident, Marge, Lisa and Bart all say, "Not Lenny!"
When Marge discovers this was only a ploy that Homer used to stay and finish his perfect game at the bowling alley, she says, "I'm so relieved that Lenny's alright." And she's knitting (two pins) or crocheting (one pin) a heart with Lenny's face on it.