ISYTIYS
Common IM abbreviation for: I'll slit your throat in your sleep.
also, ISHTIHS: I'll slit his/her throat in his/her 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.
2: Let me copy or ISYTIYS.