Verb: to rip a grumpy is to wait until the last second to shit, almost ripping off your pants button, and laying down the meaniest, "Grumpiest", shit you have ever taking in you life into any recepticle.
Mike: Tom, what were you doing all of 8th period?
Tom: Dude, I had to rip the meanest grumpy ever.
Mike: Damn, You were Ripping a Grumpy for 40 fucking minutes?
Tom:Yeah (*sniffle sniffle*).
Mike: Did it burn?
Tom: Like a Mexican man with gingivitis, and with his ass stuffed with jalapenos.
Something outstanding, awesome, rad, cool and, gnarly. Usually used to describe an action.
Similar to the phrase "just gonna send it" ripping Frickers means you are rippin up the track or just shreddin the gnar. The Frickers part doesn't really mean anything but it makes the phrase sound cooler.