Taylor Swift was one of three stars to "interrupt" actor Seth Rogen's monologue on 'Saturday Night Live' last night (April 12). The country star came late, but delivered one of the skit's most memorable lines.

Swift pokes fun at herself, explaining her presence to an emotional Rogen by saying "You were getting really upset and whenever a man shows emotion, I appear."

Rogen's monologue focused on how he was happy to be doing it alone, but then stars like James Franco and Zooey Deschanel step on stage to ruin it. Swift's good friend and one-time tour partner Ed Sheeran was the show's musical guest. Her cameo remained a secret until show time.

Swift hosted 'Saturday Night Live' in 2009. She has also appeared as a musical guest.