This gloopy stretchy thing people like to play with these days, made of pva glue and activator. Supposed to be satisfying, some people find it gross. Has many variation of texture. Some people sell it too.
kid: Mom , dad can I please get some slime?
parents: NO! It will make a mess.
kid: pleeeeeeeeeeeeeease
(after getting to the local target)
Kid: yay i have slime now i want putty.