Dirigible

[Sarah]

to be sexually pleasured by a balloon or other inflatable object by attaching said object to a penis by a string and filling the object with helium to the point where the penis is lifted into the air.

[Little_Girl]

a large aircraft without wings, consisting of a large bag filled with gas that is lighter than air and driven by engines. The pilot, passengers, etc. travel in a structure hanging below.

[Merna]

Capable of being steered, guided, or directed.