Top Definition
Common IM abbreviation for: I'll slit your throat in your sleep.

also, ISHTIHS: I'll slit his/her throat in his/her sleep.
1: I actually finished my English homework early!
2: Let me copy or ISYTIYS.
#aim #im #killing #threat #slang
by breatheyou December 21, 2008
5 Words related to ISYTIYS
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