Top Definition
The act of withdrawing the penis during male/female intercourse prior to climax and directing the male ejaculate towards the armpit area of the female partner.
"My boyfriend and I don't want to get pregnant so he likes to Tin Cap sometimes.
by carlzebra October 03, 2008
4 Words related to Tin Cap

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.