男自慢
Meanings
1
male bragging; male conceit
Refers to a man boasting about his own achievements, strength, or qualities. Often used critically.
His stories are always just male bragging, and it's embarrassing to listen to.
2
bragging about one's husband or male lover
Used when a woman boasts about her husband or boyfriend. Often implies excessive or annoying pride. Compare with 女自慢 (おんなじまん), which is bragging about one's wife or female lover.
See also: 女自慢
I'm fed up with her bragging about her boyfriend. She talks about him all the time.