A saying you reply with when you really don’t care about the conversation you’re participating in. Can also be used when something or someone is going through some hard times (just say you mean it)
Female: Omg you’re so cute!
Male:Uh thanks I guess Female:I got a boyfriend tho, but you can wait until we’re over?
Male:Damn thats tuff
"That's Tuff" meaning something is really bad or good, normally something bad. Originally used by the famous Youtuber SoLLUMINATI. It is also widely used by his fanbase.