tell us what you did
Ill tell you what my friends & I did.
We put the tip, in coins, inside a water glass. - About 15% BTW., Filled it with ice water from what was left on the table and flipped it upside down and left. If the waiter was smart, he got a bowl and slid the glass to the end of the table, spilling the water and coins into it. If he was stupid, which I suspect he was, He lifted the glass and drenched everything.
The waiter was a total douchebag. It was easy to tell he was doing it for the pot and Cheeto money. The service was slow, he screwed up the order, and he reeked.