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istmfg

Abbreviation of I Swear To Mother Fucking God. Similar to “I Swear To Fucking God” istfg, in that it is an escalation of the original term “I Swear To God” istg. A very dramatic phrase to be used only in exceptional circumstances.
John: I wrecked my car
Dave: ISTG John, again?
John: I hit yours.
Dave: ISTMFG
by thevalleyboy April 6, 2019
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ISTFG

I swear to fucking god. More violent then just I Swear To God
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Reply: ISTFG if you don't stfu.
by a.Ayala December 25, 2010
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Related Words

istfg

by chickennuggets59 February 20, 2018
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IstfgIwkms

IstfgIwkms - I swear to fucking god I wanna kill my self, another way to say I wanna kill my self without saying kms (Kill myseld)
"IstfgIwkms PLEASEE my head hurts so much" - Person 1
"what does that mean?, IstfgIwkms, what does it mean?" - person 2
"it means "I swear to fucking god I want to kill my self" - person 1
"oh ok!" - person 2
by MIASMAMAAA September 12, 2023
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