One-Two Punchline

Twice is nice! Right?

A comic trope in which either the two last panels of a strip each contain a punchline, or the last panel contains double the punchlines for double the fun. May Cross the Line Twice, but doesn't necessarily need to. The penultimate panel is often a sight gag, and if this is true, then the last panel may add a spoken punchline to this.

Related to Escalating Punchline. For webcomics, Alt Text is frequently used as a way to convey the second punchline.

Newspaper Comics

 * Often used in Pearls Before Swine, especially in the pun strips.
 * Calvin and Hobbes: Bill Watterson was fond of these, with Hobbes adding another punchline on the far right of the last panel, often a mockery or lampshade hanging on what Calvin was saying.
 * FoxTrot is fond of this.
 * Doonesbury was the first newspaper comicstrip to regularly use this, and was directly or indirectly the inspiration for most modern uses.
 * The "two punchlines in last panel" variation is frequently seen in Cul De Sac.

Webcomics

 * Sometimes in Questionable Content, as seen here.
 * In an example from Bob and George, after Bob revives from unconciousness off panel, when he actually appears in the penultimate panel of the next comic, he is wearing a ridiculous girly costume. The final panel has him making a reference to the prior Halloween comic, which is where the costume originated.
 * Cat and Girl uses a fairly standard size format for its comics, but sometimes there will be an extra panel or two drawn in grey that adds a punchline.
 * The Order of the Stick does this quite a lot.
 * Many Webcomics (including The Adventures of Dr. McNinja, Xkcd and Achewood) will include secondary punchlines in hover-over alt-text. Saturday Morning Breakfast Cereal and Amazing Super Powers go a step further, including an entire bonus second-punchline panel. The former by hovering over a red button at the end of the strip, and the latter by clicking a hidden question mark at the comic's side.