• Have a backbone
• Have a ball
• Have a ball in (one's) court
• Have a barbecue
• Have a bash
• Have a bearing on (something)
• Have a belly laugh
• Have a blast
• Have a blowout
• Have a blowup
• Have a bone to pick (with someone)
• Have a brainstorm
• Have a brainwave
• Have a break
• Have a bug
• Have a bust-up