to·bog·gan (t-bgn)
n.
A long, narrow, runnerless sled constructed of thin boards curled upward at the front end.
intr.v.
to·bog·ganed, to·bog·gan·ing, to·bog·gans
1. To coast, ride, or travel on a toboggan.
2. Slang To decline or fall rapidly: His good fortune has tobogganed.
And this is the trigger why I searched up this word:
I know I am tobogganing in your mind.