You probably heard it from David Chappelle's Netflix special "The Closer".
Dyke: a word used to refer to lesbians; a term that lesbians use in gay circles; originally a derogatory term for lesbians, now often used with pride.
Frumpy: A female with lack of concern for appearance; clothing style that usually consists of bagging; careless slothing; no style; considerably out of shape.
So, a ''frumpy dyke'' is ''a lesbian with lack of concern for appearance, from clothes to body shape''.
'I would consider myself a feminist, and I didn't even know that at the time. All these years I thought it meant frumpy dyke'.
Male genitals in the flaccid state. Excess skin causes it to resemble a dwarf wearing an oversized trench coat, potato sack or loose sock. Thus giving it a frumpy appearance.
While paragliding and performing sexual acts, you release yourselves from the harness, timing your climax with the exact moment that you collide with the ground. As an extra bonus use the lady friend as a cushion. If you're lucky, you might bounce.