look up any word, like bae:
 
1.
Using unnecessarily "brainy" or obscure words or references where more common words would suffice.
"Oops, there I go, tishing again."
by Tino Tonatini September 28, 2006
 
2.
synonym for raping. Taking advantage of someone sexually. Can also be used as a synonym for owned
"Did you hear about Zach? He was caught tishing that poor freshman!"
"I did! I heard he got arrested!"
by Urlacherfan12 December 02, 2009