to stick the tip of your dick into someone's asshole
We were fucking last night and she asked me to schimpf her.
(v.) to get strung out on a FUCK ton of drugs in a really short amount of time and get fuuuuucked uuuuuuup
(n.) the state of mind in which one has been schimpfing
He was in schimpf mode at that party, he was upstairs hittin that nitrous all night after doin a shit ton of yay