look up any word, like dirty sanchez:
 
1.
Anal sex that hurts really bad (or good if she's a masochist).
Chocolate Thundar here is ready for some painal.
by billy7583 August 30, 2006
 
2.
The act of a penis or suitable proxy being delivered to the anus with such vigor as to cause immense pain.
Max and Luke decided that the only way to properly end their boys' night out was with an intimate bout of painal.
by Joe_Not-so-cool March 14, 2014
 
3.
Having qualities that cause either emotional or physical annoyance; see pain in the ass.
Diarrhea is extremely painal.
by The Froad July 10, 2008