“Big Bobtail” is slang for holding three cards to a straight in stud (often 7‑5‑4 up with an 8 down).
Explanation. In stud variants, if you have three connected upcards, you’re said to hold a “big bobtail.” It signals strong straight potential. The term peppers reading strategy and informs bring‑in or continuation stake decisions. Knowing stud slang aids live-stud situational awareness.