And then there's the whole "squeezing my balls" thing, too.
A gentlemanly choice.
What Liam Strain said.
As men, we do need to spread our legs a bit (now that I wrote it, it sounds wrong, but you get what I mean), but the spread really shouldn't take other people's room. If you do that, you're either an inconsiderate @ssh0le, or just badly educated - or both.
What the newest tendency is, it seems, is the extreme - men shouldn't ever(!!!) manspread. Just feminazi's (and I almost never use the term)