that person who tries to portray that they are far more interesting/intelligent/amazing etc than they really are. Originates from the larger,more interestingly shaped peanuts you often find in mixed-nut packs which when eaten - taste exactly like regular peanuts!!! ahhhh!
that guy I met last night seamed pretty interesting at first, but turned out only to be a flashy peanut...
The Reese's peanut buttercup is the act of trying to go to third base while your parents are home. In order to do this, you must reach into the girls pants and try to finger her while she lies on top of you with both your clothes are still on. This follows after hooking up and boys desire to go farther. The results may vary but it still contains enormous amounts of awkwardness. However, this method can be very useful because you can brag to your friends about going to third when, in fact, u haven't gone past 2nd.
Girl: wanna hook up?
Guy: nah lets go to 3rd this time.
Girl: No!
Guy: fine how about The Reese's Peanut Buttercup method?
Girl: Perfect
Rondon: Damn dude, you look crispity crunchity peanut buttery!
Isales: Thanks bro.
Scotty (in the background): Stop usin' my shit like you made it up. You know I made that shit up! I am about to bust a cap into your asshole if you keep usin' my shit like that! Word. To Your Mother.