To "bottom out" is when one is having sex and the penis reaches the cervix, or the top part of the vagina, and can go no deeper. This can be referred to as "bottoming out," or in the past tense as "bottomed out."

It can be either painful or pleasurable, depending on the girl and how extreme the bottoming out is.
Man, I was fucking this chick last night and she told me to stop cause my dick was so big I was bottoming out on her.
by ponnor September 26, 2012
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Bottoming out is a when ones rectum peeps outside of the boundaries of ones sphincter, usually taking place after too much anal intrusion.
Phoenix Marie is Bottoming Out 110%, all this anal sex is really taking its toll on her sphincter
by MelvyntheMelt November 29, 2010
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Having sex with a group of people then asking for them to knock you out by any method, preferable by a punch or punches to the face. After you are knocked out then the group proceeds to have sex with your unconscious body.
Aaron Romero enjoy's bottoming out in his free time. He often has bruises from bottoming out.
by Bottoming out pro October 29, 2009
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When a dick/dildo/object reaches as far as it can in the area/hole/whatever they're penetrating.
When Wade bottomed out, Peter moaned in pure pleasure
by holland-stan January 21, 2018
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Bottoming-out.
Known to happen to those of us with low-riding vehicles when we underestimate a speed bump or curb and --*eeeeesh!*-- end up momentarily having the speed bump or cub bump up kinda hard against the tender underbelly of our vehicle.

This term has another, newer, meaning though and of course it's a sex one.

"Bottoming-out" in bed is also when a woman is straddling her male partner and, only when her partner has a long-ish member, she tries to go deep and rest herself on top of his hips but *-eeeeesh!-* it's too long and the tender underbelly (her cervix or just the dead end of her birth canal, so-to-speak) is bumped kinda hard up against by the aforementioned member.

Women make the same exact face when either happens.

Bottoming-out.
I'm a little bit sore this morning after bottoming-out a few times last night with Ryan, dude. Eeesh!
by Caryl-Anne Maybe May 7, 2021
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1. When the penis or other intrument used in a vagina, hits the back wall and can not go in any furthur.
2. To reach an end or back of the vagina.
My cock is so big that I bottom out in all but the skankiest whores or fat chicks.
by bot-tom ewt May 7, 2003
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When your having sex, And you go as deep as you can go untill her body touches down to your lower abdomen. This making a slapping noise.
I went so deep in her, I Bottomed out.
by Spook000 December 27, 2006
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