By Andrea Romano2014-09-26 15:07:38 UTC

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Look up “charming” in the dictionary and you’ll find a picture of Chris Pratt.

The Guardians of the Galaxy star stopped by The Tonight Show on Thursday, and played a hilarious round of “Word Sneak,” the game of slipping ridiculous words or phrases into casual conversation.

There’s something so unbelievably endearing about hearing Pratt say words like “jellyfish” and “titmouse.”

Pratt also revealed the story behind his “Douchemaster McChest” headshot from his early career, which he shared online as part of Throwback Thursday. “He [The photographer] was like, ‘good luck, kid,’ and I walked out of there and I decided that this was the best one,” said Pratt.

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