<human>: I've been with my boyfriend for almost two months and I'm starting to get introduced to and spend time around more of his friends.

When his friends aren't around, he's great. When they are around, they are crude, vulgar, and basically feed off of each other.

The other day, I stuck around when my BFs best friend came over to play video games. They literally spent an hour arguing about who makes bigger poop. I listened as my boyfriend, who up until that point I would have regarded as "classy" and "sophisticated" assure his friend that "he totally destroyed that [talking about a different friend's] toilet", and estimated that the "fudgesnake" was "about the size of three and a half stacked redbull cans".

Then, and it's probably even more disgusting IMO, his friend disagreed with him (which implicitly means that my BF didn't flush it until he had a chance to "show it off" to his friend), looked over at me and told me it was "probably the size of a grilled stuff burrito, tops". I forced a smile when he said it, but GAG. Literally picturing my BF screaming for his friend to come check out his poop, and the two of them giggling like idiots looking at it.

So... yeah. I've talked to a few of my friends, and they basically told me that this kind of stuff is normal between guys and that men are just gross and competitive over stupid/mundane stuff. But literally no guy I've ever dated before has acted like this around his friends. Then again, I guess I usually don't spend a lot of time around groups of male friends "in the wild", so idk.

Can you summarize the given text in a few sentences?
<bot>: My BF and his friends are gross when they're together. He and his best friend actively compete over who has the largest poop. My friends say it is normal for guys to do stuff like this. Is it?