motherfucker depending on how its said... more lika "ma fuckah aint no fuckin around ya hear me?" then shit
My go-to is shit. Then Jesus Christ. I do like frig, though. It's pretty versatile...frigger, frigging...
Hey, that's my favorite string O' profanity! But I never thought to add shit to the end. How the hell did I miss that?!?! Well, I guess you do learn something every day.