In addition to this, Dundreary has a lisp ("suppothe"). English, as well as American audiences loved Dundreary's character.
Asa Trenchard, the American cousin from Vermont, struggles at times communicating with his British counterparts, as shown in the following exchange with Binny, the family servant:
Bin Will you take a baath before you dress?
Asa Take a baath?
Bin A baath.
Asa I suppose you mean a bath. Wal, man, I calkalate I ain't going to expose myself to the shakes by getting into cold water in this cruel cold climate of yours, so make tracks.
Bin Make what?
Bin Make vamose!
Bin Ab-- what sir?
Asa Oh! get out.
Asa manages to confuse the Brits in the play with many of his words and phrases such as "darned old shoat," "you're small potatoes," and "a regular snorter." One of the funniest exchanges occurs during the first meeting between Asa and Dundreary and Asa expresses his surprise at Dundreary's appearance with the following exclamation: "Concentrated essence of baboons, what on earth is that?" Additionally, when a female character insults his manners, he responds with, "you sockdologizing old man-trap," likely the final words Lincoln heard before he was shot by John Wilkes Booth. The comedic value of Dundreary and Asa are what made the play a success.
*This quote is from http://www.josephhaworth.com/ea_sothern.htm .