| Acronym | Meaning |
 | BF | Bitch Features |
| BFD | Big F*cking Deal |
| BFF | Best Friends Forever |
| BFFN | Best Friends For Now |
| BFFTTE | Best Friends Forever Til The End |
| BFN | Bye For Now |
| BFR | Big F*cking Rock |
| BGWM | Be Gentle With Me |
| BHAG | Big Hairy Audacious Goal |
| BHG | Big Hearted Guy / Girl |
| BHIMBGO | Bloody Hell, I Must Be Getting Old |
| BHOF | Bald Headed Old Fart |
| BI5 | Back In Five |
| BIBI | Bye Bye |
| BIBO | Beer In, Beer Out |
| BIF | Basis In Fact |
| BIF | Before I Forget |
| BIL | Brother-In-Law |
| BIOIYA | Break It Off In Your Ass |
| BION | Believe It Or Not |
| BIOYE | Blow It Out Your Ear |
| BIOYIOP | Blow It Out Your I/O Port |
| BIOYN | Blow It Out Your Nose |
| BITCH | Basically In The Clear, Honey |
| BITD | Back In The Day |
| BITFOB | Bring It The F*ck On, Bitch |
| BJ | Blow Job |
| BKA | Better Known As |
| BL | Belly Laughing |
| BLBBLB | Back Like Bull, Brain Like Bird |
| BM | Bite Me |
| BMF | Bad Mother F*cker |
| BMGWL | Busting My Gut With Laughter |
| BMOF | Bite Me Old Fart |
| BMOTA | Bite Me On The Ass |
| BNDN | Been Nowhere Done Nothing |
| BNF | Big Name Fan |
| BO | Bug Off |
| BO | Body Odor |
| BOB | Battery Operated Boyfriend |
| BOBFOC | Body Off Baywatch, Face Off Crimewatch |
| BOCTAAE | But Of Course There Are Always Exceptions |
| BOFH | Bastard Operator From Hell |
| BOHICA | Bend Over Here It Comes Again |
| BON | Believe It Or Not |
| BORG | Boring, Old, Retarded Grandparent(s) |
| BOTEC | Back Of The Envelope Calculation |
| BOTOH | But On The Other Hand |
| BPLM | Big Person Little Mind |
| BR | Bathroom |
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