When a vagina is gaping so widely one can fit a trundle bed within it and house multiple inhabitants.
When Amanda and Gregg discussed the sex life of their friend, jessica, they said "her vag is such a trundle fuck, of course she can fit her husbands dick and her part time lovers in at the same exact time!!"
The term twindle refers to the dried leaves and flowers of female Cannibus plants. Twindle is used to describe the fine filaments of these combined items. The word twindle can also be used to describe the feeling that you would have upon smoking said substance. The feeling of pure pleasure as you can actually feel your sperm count lower.