Alan Rickman is best known for his dramatic roles and slow style of talking, but the actor, 69, does have a funny side.

The British actor, best known for playing Severus Snape in all eight "Harry Potter" movies was a guest on "The Tonight Show Starring Jimmy Fallon" Wednesday where he greated Fallon with a present.

Rickman came on stage with two helium-filled balloons for the two to inhale. Rickman is known for his deep voice, and watching the actor and late night host suck on helium to make their voices squeaky is pure gold.

Rickman called out Fallon for doing impressions of his distinctive voice with actor Benedict Cumberbatch two years ago. Rickman made Fallon suck in the gas and then apologize for the "Rickman off" in which Cumberbatch and Fallon both see who can do the best impression of him.

Rickman also discussed hijinks that happened on the set of "Harry Potter" including actor Michael Gambon, who played Professor Dumbledore, putting a fart sound machine inside Daniel Radcliffe's sleeping back while filming "Harry Potter and the Prisoner of Azkaban."

Rickman can next be seen in the film "Eye in the Sky," which comes out later this year.