Stan has a fairly short attention span and is generally not concerned about details.  Usually.  Unfortunately for Shel, she heard Stan singing his little song.  She learns the hard way that sometimes it just isn’t worth the time to talk to Stan.

=Comic transcript===========================
Stan: “I see a tiger
swing from tree to tree
picks and eats some lice
then peels a banana”
Shel: Monkey.

Stan: What?
Shel: Monkey. You said tiger but I think you meant monkey.
Stan: Uh…

Stan: Have you ever lived in a jungle? Do you even know what you’re talking about?
Shel: So… tiger, huh?
Stan: Tiger? No, of course not. Don’t be ridiculous.