It might have looked like a regular interview but Pratt, 35, took his challenge very seriously, managing to fit an array of completely random words into his conversation with Fallon on Thursday, Sept. 25.
Starting off talking about his mother-in-law's Thanksgiving meals, Pratt managed to segue into his love of the Titmouse (apparently a tiny bird that thrives near his mom-in-law's home)!
He then went on to drop "Norm from Cheers," "Soul Patch" and "Jelly Fish" into conversation, with apparently very little effort.
For his part, Fallon was reduced to hysterics as he tried to talk to Pratt about his problem with eating peanut butter and jelly sandwiches — it's all about his dentures!
Pratt's hilarious late-night moment is good preparation for his job on Saturday, Sept. 27, when he will host Saturday Night Live's 40th season premiere — his first time ever hosting the hit show.
Click on the link above to watch the funny, bizarre conversation!